Kaushal, P., & Sharma, S. P. (2011). Ecological and environmental impact of tourism. Kanishka.
シカゴスタイル引用形Kaushal, Prerna, , Shashi Prabha Sharma. Ecological and Environmental Impact of Tourism. New Delhi: Kanishka, 2011.
MLA引用形式Kaushal, Prerna, , Shashi Prabha Sharma. Ecological and Environmental Impact of Tourism. Kanishka, 2011.
警告: この引用は必ずしも正確ではありません.