APA (7th ed.) Citation

United States. Postmaster General. (1922). Instructions relative to efficiency records of post-office clerks and city letter carriers. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Postmaster General. Instructions Relative to Efficiency Records of Post-office Clerks and City Letter Carriers. Washington: U.S. GPO, 1922.

MLA (9th ed.) Citation

United States. Postmaster General. Instructions Relative to Efficiency Records of Post-office Clerks and City Letter Carriers. U.S. GPO, 1922.

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