Gray, A., & Fernald, M. L. (1950). Manual of botany: A handbook of the flowering plants and ferns of the central and northeastern United States and adjacent Canada (8th (centennial) ed.). American Book Company.
Chicago Style (17th ed.) CitationGray, Asa, and Merritt Lyndon Fernald. Manual of Botany: A Handbook of the Flowering Plants and Ferns of the Central and Northeastern United States and Adjacent Canada. 8th (centennial) ed. New York: American Book Company, 1950.
MLA (9th ed.) CitationGray, Asa, and Merritt Lyndon Fernald. Manual of Botany: A Handbook of the Flowering Plants and Ferns of the Central and Northeastern United States and Adjacent Canada. 8th (centennial) ed. American Book Company, 1950.
Warning: These citations may not always be 100% accurate.