Davidoff, P. G., & Davidoff, D. S. (1994). Sales and marketing for travel and tourism (2nd ed.). Prentice Hall Career & Technology.
Citazione stile Chigago Style (17a edizione)Davidoff, Philip G., e Doris S. Davidoff. Sales and Marketing for Travel and Tourism. 2nd ed. Englewood Cliffs, N.J: Prentice Hall Career & Technology, 1994.
Citatione MLA (9a ed.)Davidoff, Philip G., e Doris S. Davidoff. Sales and Marketing for Travel and Tourism. 2nd ed. Prentice Hall Career & Technology, 1994.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.