APA (7th ed.) Citation

Parsons, F. T. D. (1961). How to know the ferns: A guide to the names, haunts, and habits of our common ferns. Dover.

Chicago Style (17th ed.) Citation

Parsons, Frances Theodore Dana. How to Know the Ferns: A Guide to the Names, Haunts, and Habits of Our Common Ferns. New York: Dover, 1961.

MLA (9th ed.) Citation

Parsons, Frances Theodore Dana. How to Know the Ferns: A Guide to the Names, Haunts, and Habits of Our Common Ferns. Dover, 1961.