APA (7th ed.) Citation

Gross, J., & Zimmerley, S. R. (1929). Crushing resistance of minerals. [publisher not identified].

Chicago Style (17th ed.) Citation

Gross, John, and Stuart R. Zimmerley. Crushing Resistance of Minerals. Washington, D.C.: [publisher not identified], 1929.

MLA (9th ed.) Citation

Gross, John, and Stuart R. Zimmerley. Crushing Resistance of Minerals. [publisher not identified], 1929.