Louis, N., C. et al.(2000).Oprasional tata graha hotel (hotel housekeeping operationals) / Agusnawar; editor, C. Louis Noviatno, Sorang Tumanggor (Cet.1).Jakarta:Gramedia Pustaka Utama.
Gaya MLA
Noviatno, C., Louis. et al."Oprasional tata graha hotel (hotel housekeeping operationals) / Agusnawar; editor, C. Louis Noviatno, Sorang Tumanggor".Cet.1Jakarta:Gramedia Pustaka Utama,2000.Textbook.