Butler, R. W. (1991). Preservation of Library Materials. Agri-Topics No. AT 92-01.
Chicago Style (17th ed.) CitationButler, Robert W. Preservation of Library Materials. Agri-Topics No. AT 92-01. 1991.
MLA (9th ed.) CitationButler, Robert W. Preservation of Library Materials. Agri-Topics No. AT 92-01. 1991.
Warning: These citations may not always be 100% accurate.