Παραπομπή APA

DAS, P. C. (2009). MANURES AND FERTILIZERS. KALYANI.

Παραπομπή Chicago Style

DAS, P C. MANURES AND FERTILIZERS. LUDHIANA: KALYANI, 2009.

Παραπομπή MLA

DAS, P C. MANURES AND FERTILIZERS. KALYANI, 2009.