APA (7th ed.) Citation

Osgood, W. F., & Osgood, W. F. (1935). Functions of real variables. Chelsea Publ.

Chicago Style (17th ed.) Citation

Osgood, William F., and William F. Osgood. Functions of Real Variables. New York: Chelsea Publ, 1935.

MLA (9th ed.) Citation

Osgood, William F., and William F. Osgood. Functions of Real Variables. Chelsea Publ, 1935.

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