APA (7th ed.) Citation

Swingle, D. B. (1934). A textbook of systematic botany (2d ed.). McGraw-Hill Book Co..

Chicago Style (17th ed.) Citation

Swingle, Deane Bret. A Textbook of Systematic Botany. 2d ed. New York, London: McGraw-Hill Book Co., 1934.

MLA (9th ed.) Citation

Swingle, Deane Bret. A Textbook of Systematic Botany. 2d ed. McGraw-Hill Book Co., 1934.