Dyfyniad APA

Drury, A. (1969). How life is created. Marshall Cavendish Books.

Dyfyniad Arddull Chicago

Drury, Allen. How Life Is Created. London: Marshall Cavendish Books, 1969.

Dyfyniad MLA

Drury, Allen. How Life Is Created. Marshall Cavendish Books, 1969.

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