Cita APA (7a ed.)

Karp, G. A., & Karp, G. (2010). Pay less for phone services from home to cell (1st edition.). FT Press.

Cita Chicago Style (17a ed.)

Karp, Gregory Author, y Gregory Karp. Pay Less for Phone Services from Home to Cell. 1st edition. [Place of publication not identified]: FT Press, 2010.

Cita MLA (9a ed.)

Karp, Gregory Author, y Gregory Karp. Pay Less for Phone Services from Home to Cell. 1st edition. FT Press, 2010.