APA (7th ed.) Citation

United States. Bureau of War Risk Insurance. (1920). Interesting letters on Government life insurance by men you know. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Bureau of War Risk Insurance. Interesting Letters on Government Life Insurance by Men You Know. [Place of publication not identified]: [publisher not identified], 1920.

MLA (9th ed.) Citation

United States. Bureau of War Risk Insurance. Interesting Letters on Government Life Insurance by Men You Know. [publisher not identified], 1920.

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