APA (7th ed.) Citation

Metzger, O. H. (1938). Aerial tramways in the metal mining industry. Engineering & Mining Journal (00958948), 139, 109.

Chicago Style (17th ed.) Citation

Metzger, O. H. "Aerial Tramways in the Metal Mining Industry." Engineering & Mining Journal (00958948) 139 (1938): 109.

MLA (9th ed.) Citation

Metzger, O. H. "Aerial Tramways in the Metal Mining Industry." Engineering & Mining Journal (00958948), vol. 139, 1938, p. 109.

Warning: These citations may not always be 100% accurate.