APA (7th ed.) Zitazioa

Portmann, A. Animal forms and patterns: A study of the appearance of animals.

Chicago Style (17th ed.) Zitazioa

Portmann, Adolf. Animal Forms and Patterns: A Study of the Appearance of Animals.

MLA (9th ed.) Zitazioa

Portmann, Adolf. Animal Forms and Patterns: A Study of the Appearance of Animals.

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