I have found there are slight variations to the Rede, although I do not believe there is one “correct” version.  Tho they may be worded slightly different, the meaning stays true and the same.  Here are two variations of the Rede:

The Wiccan Rede
Bide ye wiccan laws you must, in perfect love and perfect trust:
Live ye must and let to live, fairly take and fairly give
Form the circle thrice about to keep unwelcome spirits out
To bind your spell well every time, let the spell be spake in rhyme
Soft of eye and light of touch, Speak ye little, listen much
Deosil go by the waxing moon, chanting out ye baleful tune
When ye Lady's moon is new, kiss your hand to her times two
When ye moon rides at her peak, then your heart's desire seek
Heed the north winds mighty gale, lock the door and trim the sail
When the wind comes from the south, love will kiss thee on the mouth.
When the wind blows from the east, expect the new and set the feast.
When the wind blows from the west Bardic words be at their best!
Nine woods in the cauldron go, burn them fast and burn them slow
Elder be ye Lady's tree, burn it not or cursed ye'll be.
When the wheel begins to turn, soon ye Beltane fires will burn
When the wheel hath turned a Yule light the log the Horned One rules.
Heed ye flower, bush and tree, by the Lady blessed be
Where the rippling waters go, cast a stone, the truth ye'll know.
When ye have and hold a need, harken not to others greed
With a fool no season spend, or be counted as his friend.
Merry meet and merry part, bright the cheeks and warm the heart.
Mind ye threefold law ye should three times bad and three times good.
When misfortune is enow, wear the star upon thy brow
True in love ye ever be,lest thy love be false to thee.
Bide ye wiccan laws you must, in perfect love and perfect trust:
These eight words the wiccan rede fulfill;
An harm ye none, do what ye will.

The Rede of the Wicca, Being known as the Counsel of the Wise Ones:
Bide the Wiccan laws ye must in Perfect Love and Perfect Trust
Live and let another live, freely take and freely give
Cast the circle thrice about, to keep all evil spirits out
To bind the spell every time, let the spell be spake in rhyme.
Soft of eye and light of touch, speak thou little, listen much.
Deosil go by waxing moon, sing and dance the Wiccan rune
Widdershins go when the moon doth wane, and the werewolf howls by the dread wolfsbane.
When the Lady's moon is new, kiss thy hand to Her times two
When the moon rides at her peak, then your heart's desire seek.
Heed the northwind's mighty gale, lock the door and drop the sail
When the wind comes from the south, love will kiss thee on the mouth.
When the wind blows from the east, expect the new and set the feast
When the west wind blows o'er thee, departed spirits restless be.
Nine woods in the cauldron go, burn them fast and burn them slow
Elder be ye Lady's tree, burn it not or cursed ye'll be.
When the wheel begins to turn, let the Beltane fires burn
When the wheel has turned to Yule, light the log and let Pan rule.
Heed ye flower, bush and tree, by the Lady, Blessed be
Where the rippling waters go, cast a stone and truth ye'll know.
When ye have a need, hearken not to others' greed
With the fool no season spend, nor be counted as his friend.
Merry meet and merry part, bright the cheeks and warm the heart
Mind the Threefold Law ye should, three times bad and three times good.
When misfortune is enow, wear the blue star on thy brow
True in love must ever be, unless thy lover's false to thee.
Eight words the Wiccan Rede fulfill
An it harm none, do what ye will