Sherwood, E. L. (1908). Nomenclature of pear; catalogue-index of known varieties referred to in American publications from 1804 to 1907. U.S. Government Printing Office.
Chicago Style (17th ed.) CitationSherwood, Emily Lee. Nomenclature of Pear; Catalogue-index of Known Varieties Referred to in American Publications from 1804 to 1907. [Washington, D.C.]: U.S. Government Printing Office, 1908.
MLA (9th ed.) CitationSherwood, Emily Lee. Nomenclature of Pear; Catalogue-index of Known Varieties Referred to in American Publications from 1804 to 1907. U.S. Government Printing Office, 1908.
Warning: These citations may not always be 100% accurate.