APA (7th ed.) Citation

Gouwens, P. R. (1967). Pattern material wear studies. [American Foundrymen's Society].

Chicago Style (17th ed.) Citation

Gouwens, Paul R. Pattern Material Wear Studies. [Des Plaines, Ill.]: [American Foundrymen's Society], 1967.

MLA (9th ed.) Citation

Gouwens, Paul R. Pattern Material Wear Studies. [American Foundrymen's Society], 1967.