Sethi, P. (2002). Millennium trends in travel tourism. Rajat.
Chicagoスタイル(17版)引用形式Sethi, Praveen. Millennium Trends in Travel Tourism. New delhi: Rajat, 2002.
MLA(9版)引用形式Sethi, Praveen. Millennium Trends in Travel Tourism. Rajat, 2002.
警告: この引用は必ずしも正確ではありません.