APA (7th ed.) Citation

(1927). Regulations No. <Z>4: Manual of instructions for officers and agents in field. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Regulations No. <Z>4: Manual of Instructions for Officers and Agents in Field. [Washington, D.C.]: U.S. Government Printing Office, 1927.

MLA (9th ed.) Citation

Regulations No. <Z>4: Manual of Instructions for Officers and Agents in Field. U.S. Government Printing Office, 1927.