APA (7th ed.) Citation

Osgood, W. F. (1938). Functions of real variables. Hafner.

Chicago Style (17th ed.) Citation

Osgood, William F. Functions of Real Variables. New York: Hafner, 1938.

MLA (9th ed.) Citation

Osgood, William F. Functions of Real Variables. Hafner, 1938.

Warning: These citations may not always be 100% accurate.