Vallen, Gary K. Check-in check-out : managing hotel operations / Gary K. Vallen, Jerome J. Vallen.- 8th ed. - Upper Saddle River, N.J. : Pearson/Prentice Hall, c2009. - xvi, 604 p. : ill. (some col.), map ; 27 cm. ISBN: '9780135036303 Subjects--Topical Terms: Hotel management. Motel management. Dewey Class. No.: 647.94068 VAL