APA (7th ed.) Citation

Boyer, H. E. (1987). Hardness testing. ASM International.

Chicago Style (17th ed.) Citation

Boyer, Howard E. Hardness Testing. Metals Parks, Ohio: ASM International, 1987.

MLA (9th ed.) Citation

Boyer, Howard E. Hardness Testing. ASM International, 1987.

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