APA (7th ed.) Citation

Fry, T. C. (1929). Elementary differential equations. D. Van Nostrand company, inc..

Chicago Style (17th ed.) Citation

Fry, Thornton C. Elementary Differential Equations. New York: D. Van Nostrand company, inc., 1929.

MLA (9th ed.) Citation

Fry, Thornton C. Elementary Differential Equations. D. Van Nostrand company, inc., 1929.