APA

Swingle D. B., . (1962). A textbook of systematic botany. New York: McGraw-Hill.

Chicago

Swingle Deane B, . 1962. A textbook of systematic botany. New York: McGraw-Hill.

Harvard

Swingle D. B., . (1962). A textbook of systematic botany. New York: McGraw-Hill.

MLA

Swingle Deane B, . A textbook of systematic botany. New York: McGraw-Hill. 1962.