Portmann, A. Animal forms and patterns: A study of the appearance of animals.
Chicago Style (17th ed.) CitationPortmann, Adolf. Animal Forms and Patterns: A Study of the Appearance of Animals.
MLA (9th ed.) CitationPortmann, Adolf. Animal Forms and Patterns: A Study of the Appearance of Animals.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.