APA (7th ed.) Citation

Francis, W., & Thiessen, R. (1929). Terminology in coal research. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Francis, Wilfrid, and Reinhardt Thiessen. Terminology in Coal Research. [Washington?]: U.S. Government Printing Office, 1929.

MLA (9th ed.) Citation

Francis, Wilfrid, and Reinhardt Thiessen. Terminology in Coal Research. U.S. Government Printing Office, 1929.

Warning: These citations may not always be 100% accurate.