Cita APA

Robinson, B. L., & Fernald, M. (1908). A handbook of the flowering plants and ferns of the central and northeastern United States and adjacent Canada. New York: American Book Co..

Citación estilo Chicago

Robinson, B. L., y M.L Fernald. A Handbook of the Flowering Plants and Ferns of the Central and Northeastern United States and Adjacent Canada. New York: American Book Co., 1908.

Cita MLA

Robinson, B. L., y M.L Fernald. A Handbook of the Flowering Plants and Ferns of the Central and Northeastern United States and Adjacent Canada. New York: American Book Co., 1908.