Dyfyniad APA

(1950). The next development in man. New York: The American Library.

Dyfyniad Arddull Chicago

The Next Development in Man. New York: The American Library, 1950.

Dyfyniad MLA

The Next Development in Man. New York: The American Library, 1950.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.