Gray, William S, 1936-. Hotel and motel management and operations / William S. Gray, Salvatore C. Liguori. - 4th ed. - Upper Saddle River, N.J : PH/PTR, c2003. - xiv, 412 p : ill ; 25 cm. ISBN: 0130990892 LCCN: 2002002152 Subjects--Topical Terms: Hotels and motels--Management LC Class. No.: TX928 / .G73 2003 Dewey Class. No.: 647.94/068