(2007). കാർഷികരംഗത്തെ വെല്ലുവിളികൾ. Ministry of Information and Broadcasting.
Trích dẫn kiểu Chicagoകാർഷികരംഗത്തെ വെല്ലുവിളികൾ. Thiruvananthapuram: Ministry of Information and Broadcasting, 2007.
Trích dẫn MLAകാർഷികരംഗത്തെ വെല്ലുവിളികൾ. Ministry of Information and Broadcasting, 2007.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.