Dyfyniad APA

WALLACE, R. A. (1992). Biology The Wood Of Life Robert A. Wallace. Harper Collins Publishers.

Dyfyniad Arddull Chicago

WALLACE, Robert A. Biology The Wood Of Life Robert A. Wallace. Harper Collins Publishers, 1992.

Dyfyniad MLA

WALLACE, Robert A. Biology The Wood Of Life Robert A. Wallace. Harper Collins Publishers, 1992.

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