APA (7th ed.) Zitazioa

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

Chicago Style (17th ed.) Zitazioa

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

MLA (9th ed.) Zitazioa

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