APA (7th ed.) Citation
Williams, S. R. (1942). Hardness and Hardness Measurements. American Society for Metals.
Chicago Style (17th ed.) Citation
Williams, Samuel R. Hardness and Hardness Measurements. Clevland: American Society for Metals, 1942.
MLA (9th ed.) Citation
Williams, Samuel R. Hardness and Hardness Measurements. American Society for Metals, 1942.
Warning: These citations may not always be 100% accurate.