APA (7th ed.) Citation

Osgood, W. F. (1938). Functions of real variables. G.E. Stechert & Co..

Chicago Style (17th ed.) Citation

Osgood, William F. Functions of Real Variables. New York: G.E. Stechert & Co., 1938.

MLA (9th ed.) Citation

Osgood, William F. Functions of Real Variables. G.E. Stechert & Co., 1938.