APA (7th ed.) Citation

Koenig, W. F., Martel, C., & Perley, C. W. (1936). Classification. Subclass PQ, part 1, French literature (Printed as manuscript.). U. S. Government Printing Office.

Chicago Style (17th ed.) Citation

Koenig, Walther Frederick, Charles Martel, and Clarence Warner Perley. Classification. Subclass PQ, Part 1, French Literature. Printed as manuscript. Washington: U. S. Government Printing Office, 1936.

MLA (9th ed.) Citation

Koenig, Walther Frederick, et al. Classification. Subclass PQ, Part 1, French Literature. Printed as manuscript. U. S. Government Printing Office, 1936.