Dyfyniad APA

Fry, W. G. (1970). Biology of the porifera: : symposia of the zoological society of london 25. Academic press.

Dyfyniad Arddull Chicago

Fry, W. G. Biology of the Porifera: : Symposia of the Zoological Society of London 25. New York: Academic press, 1970.

Dyfyniad MLA

Fry, W. G. Biology of the Porifera: : Symposia of the Zoological Society of London 25. Academic press, 1970.

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