APA (7e ed.) Bronvermelding

Não informado. (1936). Frontiers: A magazine of natural history. Academy of Natural Sciences of Philadelphia.

Chicago (17e ed.) Bronvermelding

Não informado. Frontiers: A Magazine of Natural History. Philadelphia, Pa: Academy of Natural Sciences of Philadelphia, 1936.

MLA (8e ed.) Bronvermelding

Não informado. Frontiers: A Magazine of Natural History. Academy of Natural Sciences of Philadelphia, 1936.

Let op: Deze citaties zijn niet altijd 100% accuraat.