APA (7 ম সংস্করণ) উদ্ধৃতি

(1993). Ecology and environment in India. Library of Congress Office ; Library of Congress Photoduplication Service.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Ecology and Environment in India. New Delhi : Washington, D.C.: Library of Congress Office ; Library of Congress Photoduplication Service, 1993.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

Ecology and Environment in India. Library of Congress Office ; Library of Congress Photoduplication Service, 1993.