APA (7th ed.) Citation

(1920). Alien officers on American merchant ships. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Alien Officers on American Merchant Ships. [Washington?]: U.S. Government Printing Office, 1920.

MLA (9th ed.) Citation

Alien Officers on American Merchant Ships. U.S. Government Printing Office, 1920.

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