Foster, D. L. (1991). Sales and marketing for the travel professional. New York: Glencoe.
Chicago Style CitationFoster, Dennis L. Sales and Marketing for the Travel Professional. New York: Glencoe, 1991.
Cita MLAFoster, Dennis L. Sales and Marketing for the Travel Professional. New York: Glencoe, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.