Dyfyniad APA

Johnson, C. E. (1968). Social and natural biology. East-West press.

Dyfyniad Arddull Chicago

Johnson, Cecil E. Social and Natural Biology. New Delhi: East-West press, 1968.

Dyfyniad MLA

Johnson, Cecil E. Social and Natural Biology. East-West press, 1968.

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