Dyfyniad APA

(1970). The Biology of the porifera. London: Published for the Zoological Society of London by Academic Press.

Dyfyniad Arddull Chicago

The Biology of the Porifera. London: Published for the Zoological Society of London by Academic Press, 1970.

Dyfyniad MLA

The Biology of the Porifera. London: Published for the Zoological Society of London by Academic Press, 1970.

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