Cita APA (7th ed.)

Osgood, W. F. (1940). Functions of real variables. Chelsea.

Cita Chicago (17th ed.)

Osgood, William Fogg. Functions of Real Variables. Nueva York: Chelsea, 1940.

Cita MLA (9th ed.)

Osgood, William Fogg. Functions of Real Variables. Chelsea, 1940.