Buchsbaum, R. (1948). Animals without backbones: An introduction to the invertebrates (2nd ed.).
Dyfyniad Arddull ChicagoBuchsbaum, Ralph. Animals Without Backbones: An Introduction to the Invertebrates. 2nd ed. 1948.
Dyfyniad MLABuchsbaum, Ralph. Animals Without Backbones: An Introduction to the Invertebrates. 2nd ed. 1948.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.