Cita APA (7a ed.)

Willmer, P. (1990). Invertebrate relationships: Patterns in animal evolution. Cambridge University Press.

Cita Chicago Style (17a ed.)

Willmer, Pat. Invertebrate Relationships: Patterns in Animal Evolution. Cambridge, New York: Cambridge University Press, 1990.

Cita MLA (9a ed.)

Willmer, Pat. Invertebrate Relationships: Patterns in Animal Evolution. Cambridge University Press, 1990.