Dyfyniad APA

RICHARDS, R. (1991). An Early Start To Ourselves And Evolution With Life Processes Roy Richards. Simon and Schuster.

Dyfyniad Arddull Chicago

RICHARDS, Roy. An Early Start To Ourselves And Evolution With Life Processes Roy Richards. Simon and Schuster, 1991.

Dyfyniad MLA

RICHARDS, Roy. An Early Start To Ourselves And Evolution With Life Processes Roy Richards. Simon and Schuster, 1991.

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