Cita APA (7th ed.)

Krantz, S. G. (2009). A guide to real variables. Mathematical Association of America.

Cita Chicago (17th ed.)

Krantz, Steven G. A Guide to Real Variables. [Washington, D.C.]: Mathematical Association of America, 2009.

Cita MLA (9th ed.)

Krantz, Steven G. A Guide to Real Variables. Mathematical Association of America, 2009.