


Supervision in the hospitality industry
. Miller, Jack E.; Porter, Mary. New York: John Wiley & Sons, c1985. U.I.: IUEAN. ISBN: 0471887064. (M) Libro
Customer integration : the quality function deployment (QFD) leader´s guide for decision making
. Daetz, Doug; Barnard, Bill; Norman, Rick. New York: John Wiley & Sons, 1995. U.I.: IUEAN. ISBN: 0471132772. (M) Libro