APA (7th ed.) Citation

Sisler, J. D., Fraser, T., & Ashmead, D. C. (1928). Anthracite culm and silt. [publisher not identified].

Chicago Style (17th ed.) Citation

Sisler, James D., Thomas Fraser, and Dever Campbell Ashmead. Anthracite Culm and Silt. Harrisburg: [publisher not identified], 1928.

MLA (9th ed.) Citation

Sisler, James D., et al. Anthracite Culm and Silt. [publisher not identified], 1928.