Lua APA (7ú heag.)

GULTHIE, M. J. (1961). Zology. John Wiley & Sons Inc.

Lua i Stíl Chicago (17ú heag.)

GULTHIE, Marry J. Zology. John Wiley & Sons Inc, 1961.

Lua MLA (8ú heag.)

GULTHIE, Marry J. Zology. John Wiley & Sons Inc, 1961.

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