Singh, R. (2003). Indian ecotourism: Environmental rules and regulations. Kanishka Publishers.
シカゴスタイル引用形Singh, Ratandeep. Indian Ecotourism: Environmental Rules and Regulations. New Delhi: Kanishka Publishers, 2003.
MLA引用形式Singh, Ratandeep. Indian Ecotourism: Environmental Rules and Regulations. Kanishka Publishers, 2003.
警告: この引用は必ずしも正確ではありません.