APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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