APA (7th ed.) Citation

(1936). Classification. Class P, PJ-PM supplement. U. S. Government Printing Office.

Chicago Style (17th ed.) Citation

Classification. Class P, PJ-PM Supplement. Washington: U. S. Government Printing Office, 1936.

MLA (9th ed.) Citation

Classification. Class P, PJ-PM Supplement. U. S. Government Printing Office, 1936.