APA (7th ed.) Citation

United States. Postmaster General. (1930). Certification and terminal inspection of plants and plant products. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Postmaster General. Certification and Terminal Inspection of Plants and Plant Products. Washington: U.S. GPO, 1930.

MLA (9th ed.) Citation

United States. Postmaster General. Certification and Terminal Inspection of Plants and Plant Products. U.S. GPO, 1930.

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