APA (7th ed.) Citation

United States. War Department. War Plans Division. (1918). Machine gun service regulations: Section 1. Definitions. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. War Department. War Plans Division. Machine Gun Service Regulations: Section 1. Definitions. [Washington]: [publisher not identified], 1918.

MLA (9th ed.) Citation

United States. War Department. War Plans Division. Machine Gun Service Regulations: Section 1. Definitions. [publisher not identified], 1918.

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