Cita APA (7th ed.)

GERSON RICHARD F. (2004). BEYOND CUSTOMER SERVICE. VIVA BOOKS PVT.LTD.

Cita Chicago (17th ed.)

GERSON RICHARD F. BEYOND CUSTOMER SERVICE. NEW DELHI: VIVA BOOKS PVT.LTD, 2004.

Cita MLA (9th ed.)

GERSON RICHARD F. BEYOND CUSTOMER SERVICE. VIVA BOOKS PVT.LTD, 2004.