Gaya APA

Werz, Edward W., Germain, Sally. (1993). The Complete Customer Service Letter Book . New York: MCGRAW-HILL.

Gaya Chicago

Werz, Edward W., Germain, Sally. The Complete Customer Service Letter Book. New York: MCGRAW-HILL, 1993. .

Gaya MLA

Werz, Edward W., Germain, Sally. The Complete Customer Service Letter Book. New York: MCGRAW-HILL, 1993. .

Gaya Turabian

Werz, Edward W., Germain, Sally. The Complete Customer Service Letter Book. New York: MCGRAW-HILL, 1993. .