APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Krantz, Steven G. A Guide to Real Variables. [S.l.]: The Mathematical Association of America, 2009.

MLA (8th ed.) Citation

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

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