Παραπομπή APA

Bhaskara Rao,, D. (2010). Environmental education: Problems and prospects. Discovery.

Παραπομπή Chicago Style

Bhaskara Rao,, Digumarti. Environmental Education: Problems and Prospects. New Delhi: Discovery, 2010.

Παραπομπή MLA

Bhaskara Rao,, Digumarti. Environmental Education: Problems and Prospects. Discovery, 2010.