VENUGOPAL PINGALI. (2004). STATE OFTHE INDIAN FARMER: INPUT MANAGEMENT,VOL.8. ACADEMIC FOUNDATION.
Chicago (17e ed.) BronvermeldingVENUGOPAL PINGALI. STATE OFTHE INDIAN FARMER: INPUT MANAGEMENT,VOL.8. NEW DELHI: ACADEMIC FOUNDATION, 2004.
MLA (9e ed.) BronvermeldingVENUGOPAL PINGALI. STATE OFTHE INDIAN FARMER: INPUT MANAGEMENT,VOL.8. ACADEMIC FOUNDATION, 2004.
Let op: Deze citaties zijn niet altijd 100% accuraat.