APA (7th ed.) Citation

Harding, J. W. (1939). The steam locomotive (1939 ed.). International Textbook Co..

Chicago Style (17th ed.) Citation

Harding, J. W. The Steam Locomotive. 1939 ed. Scranton, Pa.: International Textbook Co., 1939.

MLA (9th ed.) Citation

Harding, J. W. The Steam Locomotive. 1939 ed. International Textbook Co., 1939.