Villee, C. A., Walker, W. F., & Barnes, R. D. (1984). General zoology. Saunders College Pub.
Lua i Stíl Chicago (17ú heag.)Villee, Claude Alvin, Warren Franklin Walker, agus Robert D. Barnes. General Zoology. Philadelphia: Saunders College Pub, 1984.
Lua MLA (9ú heag.)Villee, Claude Alvin, et al. General Zoology. Saunders College Pub, 1984.
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