Penggayaan APA
ZEITHAML, Valarie A. (2009).
Services marketing : (5th.ed).
Boston:
McGraw Hill.
Chicago Style
ZEITHAML, Valarie A.
Services marketing :.
5th.ed
Boston:
McGraw Hill,
2009.
Buku.
MLA Style
ZEITHAML, Valarie A.
Services marketing :.
5th.ed
Boston:
McGraw Hill,
2009.
Buku.
Turabian Style
ZEITHAML, Valarie A.
Services marketing :.
5th.ed
Boston:
McGraw Hill,
2009.
Buku.