Waddington, H., & White, H. (2014). Farmer field schools: From agricultural extension to adult education : 3ie systematic review summary 1. International Initiative for Impact Evaluation (3ie).
Chicago-viite (17. p.)Waddington, Hugh, ja Howard White. Farmer Field Schools: From Agricultural Extension to Adult Education : 3ie Systematic Review Summary 1. London: International Initiative for Impact Evaluation (3ie), 2014.
MLA-viite (9. p.)Waddington, Hugh, ja Howard White. Farmer Field Schools: From Agricultural Extension to Adult Education : 3ie Systematic Review Summary 1. International Initiative for Impact Evaluation (3ie), 2014.
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