Tangco, B. L. (2011). The convenience in varying zoological classification in that which refers to man. Philippiniana Sacra.
Chicago-referens (17:e uppl.)Tangco, Belen Lorezca. "The Convenience in Varying Zoological Classification in That Which Refers to Man." Philippiniana Sacra 2011.
MLA-referens (9:e uppl.)Tangco, Belen Lorezca. "The Convenience in Varying Zoological Classification in That Which Refers to Man." Philippiniana Sacra, 2011.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.