Verma,Ravindra. (2010). Tourism in 21st century. Centrum Press.
Chicago Edition CitationVerma,Ravindra. Tourism in 21st Century. New Delhi: Centrum Press, 2010.
Cita MLAVerma,Ravindra. Tourism in 21st Century. Centrum Press, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.