International Institute of Tropical Agriculture & Mutsaers, H. J. W. (1997). A field guide for on-farm experimentation. International Institute of Tropical Agriculture.
Chicago-viite (17. p.)International Institute of Tropical Agriculture ja H. J. W. Mutsaers. A Field Guide for On-farm Experimentation. Ibadan, Nigeria: International Institute of Tropical Agriculture, 1997.
MLA-viite (8. p.)International Institute of Tropical Agriculture ja H. J. W. Mutsaers. A Field Guide for On-farm Experimentation. International Institute of Tropical Agriculture, 1997.
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