United States. Department of Agriculture. Office of the Secretary & Spaulding, P. (1914). New facts concerning white-pine blister rust. U.S. GPO.
Chicago Style (17th ed.) CitationUnited States. Department of Agriculture. Office of the Secretary and Perley Spaulding. New Facts Concerning White-pine Blister Rust. Washington: U.S. GPO, 1914.
MLA (9th ed.) CitationUnited States. Department of Agriculture. Office of the Secretary and Perley Spaulding. New Facts Concerning White-pine Blister Rust. U.S. GPO, 1914.
Warning: These citations may not always be 100% accurate.