Matheson, H., & Hardjono Danusastro. (1976). Guideline proposals for agricultural extension services and operational training programmes in transmigration areas: With reference to upland rainfed areas and, in particular, the Pematang Panggang Transmigration Project Area, South Sumatra. Jakarta: Ministry of Manpower, Transmigration and Cooperatives.

Matheson, H.D, and Hardjono Danusastro. Guideline Proposals for Agricultural Extension Services and Operational Training Programmes in Transmigration Areas: With Reference to Upland Rainfed Areas And, in Particular, the Pematang Panggang Transmigration Project Area, South Sumatra. Jakarta: Ministry of Manpower, Transmigration and Cooperatives, 1976.

Matheson, H.D, and Hardjono Danusastro. Guideline Proposals for Agricultural Extension Services and Operational Training Programmes in Transmigration Areas: With Reference to Upland Rainfed Areas And, in Particular, the Pematang Panggang Transmigration Project Area, South Sumatra. Jakarta: Ministry of Manpower, Transmigration and Cooperatives, 1976.