APA (7th ed.) Citation

Crelling, J. C., & Dutcher, R. R. Principles and applications of coal petrology: Short course notes. Society of Economic Paleontologists and Mineralogists, [1980?].

Chicago Style (17th ed.) Citation

Crelling, John C., and Russell R. Dutcher. Principles and Applications of Coal Petrology: Short Course Notes. Tulsa, Okla.: Society of Economic Paleontologists and Mineralogists, [1980?].

MLA (9th ed.) Citation

Crelling, John C., and Russell R. Dutcher. Principles and Applications of Coal Petrology: Short Course Notes. Society of Economic Paleontologists and Mineralogists, [1980?].