Vashist, H. (2003). Environmental education: Problems and solutions. Book Enclave.
Chicago-viite (17. p.)Vashist, Himanshu. Environmental Education: Problems and Solutions. Jaipur: Book Enclave, 2003.
MLA-viite (9. p.)Vashist, Himanshu. Environmental Education: Problems and Solutions. Book Enclave, 2003.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.