Kaushal, P. (2011). Ecological and Environmental Impact of Tourism. Kanishka Publishers , Distributors.
استشهاد بنمط شيكاغوKaushal, Prerna. Ecological and Environmental Impact of Tourism. New Delhi: Kanishka Publishers , Distributors, 2011.
MLA استشهادKaushal, Prerna. Ecological and Environmental Impact of Tourism. Kanishka Publishers , Distributors, 2011.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.