APA Style

Werz, E, W., Germain, S. (1993). The Complete customer service letter book / Edward W. Werz and Sally Germain (1). New York: McGraw-Hill.

MLA Style

Werz, Edward, W.., Germain, Sally. "The Complete customer service letter book / Edward W. Werz and Sally Germain". 1 New York: McGraw-Hill, 1993. Textbook ห้องสมุดทั่วไป.