Agung, Y. (2012). Yes! I can serve: Handbook for service excellence. Publishing One.
Chicago Style aipamenaAgung, Yuliana. Yes! I Can Serve: Handbook for Service Excellence. Publishing One, 2012.
MLA aipamenaAgung, Yuliana. Yes! I Can Serve: Handbook for Service Excellence. Publishing One, 2012.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.