Gerard, J. (1889). Science and Scientists: Some Papers on Natural History: No. VI. Instinct and Its Lessons. London.
Chicago Style (17th ed.) CitationGerard, John. Science and Scientists: Some Papers on Natural History: No. VI. Instinct and Its Lessons. London, 1889.
MLA (8th ed.) CitationGerard, John. Science and Scientists: Some Papers on Natural History: No. VI. Instinct and Its Lessons. London, 1889.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.