APA Style
Martin, W, B., Wahyudi, H. (2004).
Managing Quality Customer Service: Mengelola Kualitas Layanan .
Jakarta:
Elex Media Komputindo.
MLA Style
Martin, William, B.., Wahyudi, Hari.
"Managing Quality Customer Service: Mengelola Kualitas Layanan".
Jakarta:
Elex Media Komputindo,
2004.
Text.