APA (7th ed.) Citation

Johnson, C. G., Dean, R. S., & Gregg, J. L. (1938). Metallurgy. American technical society.

Chicago Style (17th ed.) Citation

Johnson, Carl Gunnard, Reginald Scott Dean, and James Lawrence Gregg. Metallurgy. Chicago: American technical society, 1938.

MLA (9th ed.) Citation

Johnson, Carl Gunnard, et al. Metallurgy. American technical society, 1938.