Gaya APA

Gray, W, S., Liguori, S, C. (1994). International Edition Hotel and Motel Management and Operations 3rd edition (3rd ed.). Singapore: Simon & Schuster Ltd.

Gaya MLA

Gray, William, S.., Liguori, Salvatore, C.. "International Edition Hotel and Motel Management and Operations 3rd edition". 3rd ed. Singapore: Simon & Schuster Ltd, 1994. Text.