MOHINDRA, K. (2011). TOWARDS A BETTER ENVIRONMENT - 2. MADHUBUN EDUCATIONAL BOOKS.
Chicago-viite (17. p.)MOHINDRA, KAMLESH. TOWARDS A BETTER ENVIRONMENT - 2. MADHUBUN EDUCATIONAL BOOKS, 2011.
MLA-viite (9. p.)MOHINDRA, KAMLESH. TOWARDS A BETTER ENVIRONMENT - 2. MADHUBUN EDUCATIONAL BOOKS, 2011.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.