Cita APA (7th ed.)

KATZ BERNARD. (1987). HOW TO TURN CUSTOMER SERVICE IN TO CUSTOMER SALES. WILDWOOD HOUSE LTD.

Cita Chicago (17th ed.)

KATZ BERNARD. HOW TO TURN CUSTOMER SERVICE IN TO CUSTOMER SALES. ENGLAND: WILDWOOD HOUSE LTD, 1987.

Cita MLA (9th ed.)

KATZ BERNARD. HOW TO TURN CUSTOMER SERVICE IN TO CUSTOMER SALES. WILDWOOD HOUSE LTD, 1987.