Παραπομπή APA

Singh, G. (2005). Greening sodic lands: Bichhian model. CSSRI.

Παραπομπή Chicago Style

Singh, Gurbachan. Greening Sodic Lands: Bichhian Model. Karnal: CSSRI, 2005.

Παραπομπή MLA

Singh, Gurbachan. Greening Sodic Lands: Bichhian Model. CSSRI, 2005.