Authorized Version
    For this cause ought the woman to have power on her head because of the angels.

American Standard Version
    for this cause ought the woman to have [a sign of] authority on her head, because of the angels.

The Bible in Basic English
    For this reason it is right for the woman to have a sign of authority on her head, because of the angels.

The Darby Bible
    Therefore ought the woman to have authority on her head, on account of the angels.

The Webster Bible
    For this cause ought the woman to have power on [her] head, because of the angels.

Young's Literal Translation
    because of this the woman ought to have [a token of] authority upon the head, because of the messengers;

World English Bible
    For this cause the woman ought to have authority on her head, because of the angels.