Gray, A., & Fernald, M. L. (1987). Gray's manual of botany: A handbook of the flowering plants and ferns of the central and northeastern United States and adjacent Canada (Eighth (centennial) edition.). Dioscorides Press.
Chicago Style (17th ed.) CitationGray, Asa, and Merritt Lyndon Fernald. Gray's Manual of Botany: A Handbook of the Flowering Plants and Ferns of the Central and Northeastern United States and Adjacent Canada. Eighth (centennial) edition. Portland, Or.: Dioscorides Press, 1987.
MLA (9th ed.) CitationGray, Asa, and Merritt Lyndon Fernald. Gray's Manual of Botany: A Handbook of the Flowering Plants and Ferns of the Central and Northeastern United States and Adjacent Canada. Eighth (centennial) edition. Dioscorides Press, 1987.
Warning: These citations may not always be 100% accurate.