1. Farmers’ experiments and scientific methodology
2. Stuiver, Marian, Leeuwis, Cees, and van der Ploeg, Jan Douwe . The Power of Experience: Farmers' Knowledge and Sustainable Innovations in Agriculture . In Seeds of Transition: Essays on novelty production, niches ans regimes in agriculture. , pages 93 -- 118 . Van Gorcum , 2004 . Stuiver, Marian, Leeuwis, Cees, and van der Ploeg, Jan Douwe. The Power of Experience: Farmers' Knowledge and Sustainable Innovations in Agriculture. In Seeds of Transition: Essays on novelty production, niches ans regimes in agriculture., pages 93--118. Van Gorcum, 2004.
3. Chapter 44 Agricultural Extension
4. B. Kelsey Jack . Market inefficiencies and the adoption of agricultural technologies in developing countries . May 2013 . URL https://escholarship.org/uc/item/6m25r19c. B. Kelsey Jack. Market inefficiencies and the adoption of agricultural technologies in developing countries. May 2013. URL https://escholarship.org/uc/item/6m25r19c.
5. J. D. van der Ploeg . The virtual farmer. Past, present, and future of the Dutch peasantry. Royal van Gorcum , 2003 . ISBN 978-90-232-3892-8. URL https://research.wur.nl/en/publications/the-virtual-farmer-past-present-and-future-of-the-dutch-peasantry. J. D. van der Ploeg. The virtual farmer. Past, present, and future of the Dutch peasantry. Royal van Gorcum, 2003. ISBN 978-90-232-3892-8. URL https://research.wur.nl/en/publications/the-virtual-farmer-past-present-and-future-of-the-dutch-peasantry.