APA (7e ed.) Bronvermelding

Não informado. (1922). Engineering and Mining Journal-Press. McGraw-Hill Publications.

Chicago (17e ed.) Bronvermelding

Não informado. Engineering and Mining Journal-Press. New York: McGraw-Hill Publications, 1922.

MLA (8e ed.) Bronvermelding

Não informado. Engineering and Mining Journal-Press. McGraw-Hill Publications, 1922.

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