United States. Department of Agriculture. Office of the Secretary. (1922). Preparation of peat composts. U.S. GPO.
Chicago Style (17th ed.) CitationUnited States. Department of Agriculture. Office of the Secretary. Preparation of Peat Composts. Washington: U.S. GPO, 1922.
MLA (9th ed.) CitationUnited States. Department of Agriculture. Office of the Secretary. Preparation of Peat Composts. U.S. GPO, 1922.
Warning: These citations may not always be 100% accurate.