Cita APA (7a ed.)

Villee, C., Warren, W., & Smith, F. (1968). General zoology (3a. ed.). W.B.Saunders.

Cita Chicago Style (17a ed.)

Villee, Claude, Walker Warren, y Frederick Smith. General Zoology. 3a. ed. Filadelfia: W.B.Saunders, 1968.

Cita MLA (8a ed.)

Villee, Claude, et al. General Zoology. 3a. ed. W.B.Saunders, 1968.