Shah, V. D. (1989). Fertilizer consumption in Gujarat. Agro Economic Research Centre, Sardar Patel University.
Chicago-referens (17:e uppl.)Shah, V. D. Fertilizer Consumption in Gujarat. Vallabh Vidyanagar, Gujarat: Agro Economic Research Centre, Sardar Patel University, 1989.
MLA-referens (8:e uppl.)Shah, V. D. Fertilizer Consumption in Gujarat. Agro Economic Research Centre, Sardar Patel University, 1989.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.