Cita APA (7th ed.)

Kalakota, R. (1999). Frontiers of electronic commerce (2nd.). Addison Wesley.

Cita Chicago (17th ed.)

Kalakota, Ravi. Frontiers of Electronic Commerce. 2nd. Massachuse tts: Addison Wesley, 1999.

Cita MLA (9th ed.)

Kalakota, Ravi. Frontiers of Electronic Commerce. 2nd. Addison Wesley, 1999.