Statev, V. S. (2011). THE ADDED VALUE FORMED BY THE ALTERNATIVE IN TOURISM. Universidade do Algarve.
Citazione stile Chigago Style (17a edizione)Statev, Ventsislav Statev. THE ADDED VALUE FORMED BY THE ALTERNATIVE IN TOURISM. Universidade do Algarve, 2011.
Citatione MLA (9a ed.)Statev, Ventsislav Statev. THE ADDED VALUE FORMED BY THE ALTERNATIVE IN TOURISM. Universidade do Algarve, 2011.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.