Gaya APA
Werz, Edward W., Germain, Sally. (1993).
The Complete Customer Service Letter Book .
New York, NY:
McGraw-Hill.
Gaya Chicago
Werz, Edward W., Germain, Sally.
The Complete Customer Service Letter Book.
New York, NY:
McGraw-Hill,
1993.
Buku.
Gaya MLA
Werz, Edward W., Germain, Sally.
The Complete Customer Service Letter Book.
New York, NY:
McGraw-Hill,
1993.
Buku.
Gaya Turabian
Werz, Edward W., Germain, Sally.
The Complete Customer Service Letter Book.
New York, NY:
McGraw-Hill,
1993.
Buku.