Eastern European tourism at a crossroads : The student's perspective on sustainable tourism. Варна: Унив. изд. Наука и икономика, 2005 с. 940 - 945, 954-21-0227-5.
Eastern European tourism at a crossroads : The student's perspective on sustainable tourism. Варна: Унив. изд. Наука и икономика, 2005 с. 940 - 945, 954-21-0227-5.
(2005) Eastern European tourism at a crossroads : The student's perspective on sustainable tourism, Варна: Унив. изд. Наука и икономика с. 940 - 945, 954-21-0227-5.
(2005). Eastern European tourism at a crossroads : The student's perspective on sustainable tourism. Варна: Унив. изд. Наука и икономика, с. 940 - 945.
Eastern European tourism at a crossroads : The student's perspective on sustainable tourism. Варна: Унив. изд. Наука и икономика; 2005. p. с. 940 - 945. ISBN: 954-21-0227-5.
