APA (7e ed.) Bronvermelding

Não informado. (1930). Engineering and mining world. McGraw-Hill Publications.

Chicago (17e ed.) Bronvermelding

Não informado. Engineering and Mining World. New York: McGraw-Hill Publications, 1930.

MLA (8e ed.) Bronvermelding

Não informado. Engineering and Mining World. McGraw-Hill Publications, 1930.

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