APA (7th ed.) Citation

Cobb, B. (1956). A field guide to the ferns: And their related families of North-Eastern and Central North America with a section on species also found in the British Isles and Western Europe. Houghton Mifflin.

Chicago Style (17th ed.) Citation

Cobb, Boughton. A Field Guide to the Ferns: And Their Related Families of North-Eastern and Central North America with a Section on Species Also Found in the British Isles and Western Europe. Boston: Houghton Mifflin, 1956.

MLA (9th ed.) Citation

Cobb, Boughton. A Field Guide to the Ferns: And Their Related Families of North-Eastern and Central North America with a Section on Species Also Found in the British Isles and Western Europe. Houghton Mifflin, 1956.