APA (7th ed.) Citation

Nicholls, P., Ricketts, E. B., & Selvig, W. A. (1932). Clinker formation as related to fusibility of coal ash. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Nicholls, P., E. B. Ricketts, and W. A. Selvig. Clinker Formation as Related to Fusibility of Coal Ash. [Washington?]: U.S. Government Printing Office, 1932.

MLA (9th ed.) Citation

Nicholls, P., et al. Clinker Formation as Related to Fusibility of Coal Ash. U.S. Government Printing Office, 1932.