APA استشهاد

P D Thiwari & A N Sharma. (1989). Tribal ecosystem and malnutrition in India. Northern Book Centre.

استشهاد بنمط شيكاغو

P D Thiwari و A N Sharma. Tribal Ecosystem and Malnutrition in India. New Delhi: Northern Book Centre, 1989.

MLA استشهاد

P D Thiwari و A N Sharma. Tribal Ecosystem and Malnutrition in India. Northern Book Centre, 1989.