APA (7e ed.) Bronvermelding

Não informado. (1913). Economic series. British Museum of Natural History.

Chicago (17e ed.) Bronvermelding

Não informado. Economic Series. London: British Museum of Natural History, 1913.

MLA (8e ed.) Bronvermelding

Não informado. Economic Series. British Museum of Natural History, 1913.

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