APA (7e ed.) Bronvermelding

Não informado. (2021). Annual Report of the Geological Survey and Mines Department, Bechuanaland. Geological Survey and Mines Department.

Chicago (17e ed.) Bronvermelding

Não informado. Annual Report of the Geological Survey and Mines Department, Bechuanaland. Gaberones: Geological Survey and Mines Department, 2021.

MLA (8e ed.) Bronvermelding

Não informado. Annual Report of the Geological Survey and Mines Department, Bechuanaland. Geological Survey and Mines Department, 2021.

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