APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Swingle, Deane B. A Textbook of Systematic Botany (1934). 2nd ed. New York: McGraw-Hill Book Co., Inc, 1934.

MLA (9th ed.) Citation

Swingle, Deane B. A Textbook of Systematic Botany (1934). 2nd ed. McGraw-Hill Book Co., Inc, 1934.