APA (7th ed.) Citation

Davis, E. W., Umene, T., & Abbe, T. (1937). Magnetic roasting of iron ore. [publisher not identified].

Chicago Style (17th ed.) Citation

Davis, Edward W., Tsunesaburo Umene, and Tohru Abbe. Magnetic Roasting of Iron Ore. [Minneapolis, Minn.]: [publisher not identified], 1937.

MLA (9th ed.) Citation

Davis, Edward W., et al. Magnetic Roasting of Iron Ore. [publisher not identified], 1937.