APA (7th ed.) Citation

Swingle, D. (1928). A Textbook of systematic botany. McGraw-Hill Book Co., Inc.

Chicago Style (17th ed.) Citation

Swingle, D.B. A Textbook of Systematic Botany. New York: McGraw-Hill Book Co., Inc, 1928.

MLA (9th ed.) Citation

Swingle, D.B. A Textbook of Systematic Botany. McGraw-Hill Book Co., Inc, 1928.