APA ציטוט

Sudha Singh. (2011). Paryavaran shiksha. Lokbharati.

Chicago Edition Citation

Sudha Singh. Paryavaran Shiksha. Alahabad: Lokbharati, 2011.

ציטוט MLA

Sudha Singh. Paryavaran Shiksha. Lokbharati, 2011.