Gaya APA
Haryadi, I. et al (1997).
Manajemen kantor depan hotel : (hotel front office management) / Endar Sugiarto, Ign Haryadi; editor, Frans Kowa .
Jakarta:
Gramedia Pustaka Utama.
Gaya MLA
Haryadi, Ign. et al.
"Manajemen kantor depan hotel : (hotel front office management) / Endar Sugiarto, Ign Haryadi; editor, Frans Kowa".
Jakarta:
Gramedia Pustaka Utama,
1997.
Skripsi.