Style de citation APA (7e éd.)

Werz, E. W. (1993). The complete customer service letter book. McGraw-Hill.

Style de citation Chicago (17e éd.)

Werz, Edward W. The Complete Customer Service Letter Book. New York: McGraw-Hill, 1993.

Style de citation MLA (9e éd.)

Werz, Edward W. The Complete Customer Service Letter Book. McGraw-Hill, 1993.