Dyfyniad APA

Lucas, J., & Critch, P. (1974). Life in the oceans. Thames & Hudson.

Dyfyniad Arddull Chicago

Lucas, Joseph, and Pamela Critch. Life in the Oceans. London: Thames & Hudson, 1974.

Dyfyniad MLA

Lucas, Joseph, and Pamela Critch. Life in the Oceans. Thames & Hudson, 1974.

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