Cita APA (7th ed.)

Buchsbaum, R. (1948). Animals without backbones: An introduction to the invertebrates (Segunda edición.). The University of Chicago Press.

Cita Chicago (17th ed.)

Buchsbaum, Ralph. Animals Without Backbones: An Introduction to the Invertebrates. Segunda edición. Chicago, USA: The University of Chicago Press, 1948.

Cita MLA (9th ed.)

Buchsbaum, Ralph. Animals Without Backbones: An Introduction to the Invertebrates. Segunda edición. The University of Chicago Press, 1948.