Modelli e strumenti di presentazione telematica del territorio alla domanda turistica / Giovanni Peroni
Language commun de transactions pour le tourisme et les loisirs : Principes d'organization syntaxique. Norme experimentale Z 16-002 / AFNOR
Computer-assisted travel counseling / Harald Hruschka, Josef Mazanec
The bed and breakfast and small inn industry of the commonwealth of Massachusetts : an exploratory survey / Rodney B. Warnick, Lawrence R. Klair, Jr.