Abou Elmagd. 2002. Modern trends in harvesting root crops. State of art. Agric. Eng. Mansoura Uni.
Ahmed D. and Shamsudeen V.G. 1987. Development of a prototype tractor-operated groundnut digger lifter. Peratanika vol. 10 No.2, 219-223.
Amin, E. 1990. Mechanization for potato production on small farms Ph.D. Theses, Agric. Eng. Dept Fac. of Agric., Mansoura Univ.
Awady, M. N. 1978. Engineering of tractors and agricultural machinery. Text Book, Col. Ag. Ain-shams Univ., 5th. Ed: 161-164. In Arabic.
Japanese Trade Policy Institute. 1986. Design a vibrating potato digger. (Cited from Misr j. Ag. Eng. (2000), 17(3):589.
Kang, W.S and J.L. Halderson. 1991. A vibratory two-row potato digger. Applied Engineering in agriculture. 7 (6): 683-687.
Mizrach A., Margolin A., Feller R. and Alper Y. 1983. Peanut salvage machine for sandy loam and clay soils. Trans. ASAE. 26 (2): 389-391.
Magdy, M.A. A. 1991. Mechanization of potato harvesting. P. hD. Agric. Eng. Al-Azhar Uni.
Srivastava, A. k., C. E. Goering and R. P. Rohrbach. 1995. Engineering principals of Agricultural Machines. Merican society of Agric. Eng. Pemela Devore Hansen, Editor Books & Journals.
المراجع باللغة العربية
الإدارة المرکزية للإرشاد الزراعي. 2005 . وزارة الزراعة. نشرة رقم 813. زراعة وإنتاج البطاطس.
الإدارة المرکزية للإرشاد الزراعي. 2003 . وزارة الزراعة. نشرة رقم 879. زراعة وإنتاج الفول السوداني.