APA (7e ed.) Bronvermelding

Wilcox, J. M. (1980). International trade in coal. Australian Government Publishing Service.

Chicago (17e ed.) Bronvermelding

Wilcox, J. M. International Trade in Coal. Canberra: Australian Government Publishing Service, 1980.

MLA (8e ed.) Bronvermelding

Wilcox, J. M. International Trade in Coal. Australian Government Publishing Service, 1980.

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