APA (7th ed.) Citation

Allen, R. M. (1939). The microscope in elementary cast iron metallurgy. American foundrymen's association.

Chicago Style (17th ed.) Citation

Allen, Roy Morris. The Microscope in Elementary Cast Iron Metallurgy. [Chicago]: American foundrymen's association, 1939.

MLA (8th ed.) Citation

Allen, Roy Morris. The Microscope in Elementary Cast Iron Metallurgy. American foundrymen's association, 1939.

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