Gaya APA
Zemke, Ron, Schaaf, Dick. (1989).
The Service edge : 101 companies that profit from customer care .
New York:
New American Library.
Gaya Chicago
Zemke, Ron, Schaaf, Dick.
The Service edge : 101 companies that profit from customer care.
New York:
New American Library,
1989.
Buku.
Gaya MLA
Zemke, Ron, Schaaf, Dick.
The Service edge : 101 companies that profit from customer care.
New York:
New American Library,
1989.
Buku.
Gaya Turabian
Zemke, Ron, Schaaf, Dick.
The Service edge : 101 companies that profit from customer care.
New York:
New American Library,
1989.
Buku.