Singh, R. (2011). Tourism sector: Facing the challenge. Sonali.
シカゴスタイル引用形Singh, Rajesh. Tourism Sector: Facing the Challenge. New Delhi: Sonali, 2011.
MLA引用形式Singh, Rajesh. Tourism Sector: Facing the Challenge. Sonali, 2011.
警告: この引用は必ずしも正確ではありません.