1. Adedoyin , S.F. (2004) Plentiful Agricultural Resources but Limited Andragogical Transmission. 3rdInaugural Lecture , Olabisi Onabanjo University , Ago Iwoye , pp. 1 – 51 .
2. Ajayi , A.O. (1990) Effectiveness of Communication Methods Used in Oyo State Agricultural Development Project. A Case Study of Kajaola Local Government. B. Agric. Science Research Project , Department of Agricultural Extension and Rural Sociology, Obafemi Awolowo University , Ile-Ife, Nigeria .
3. Blaine , W.T. , Lichtkoppler , F.R. & Stanbro , R. (2003) An Assessment of Residents’ Willingness to Pay for Green Space and Farmland Preservation Conservation Easements Using the Contingent Valuation Method CVM . Journal of Extension , 41(4) , < http://www.joe.org/joe/2003august/a3.shtml >