Não informado. (1939). Biological abstracts. Union of American Biological Societies.
Chicago Style (17th ed.) CitationNão informado. Biological Abstracts. Philadelphia, Pa: Union of American Biological Societies, 1939.
MLA (8th ed.) CitationNão informado. Biological Abstracts. Union of American Biological Societies, 1939.
Warning: These citations may not always be 100% accurate.