APA (7th ed.) Citation

Stoke, W. J. (1961). The observer's book of British ferns: Describing forty-five species. F. Warne.

Chicago Style (17th ed.) Citation

Stoke, William John. The Observer's Book of British Ferns: Describing Forty-five Species. London, New York: F. Warne, 1961.

MLA (9th ed.) Citation

Stoke, William John. The Observer's Book of British Ferns: Describing Forty-five Species. F. Warne, 1961.