Ign, H. 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.