1. Badstue, L. B. (2006). Smallholder seed practices: Maize seed management in the central valleys of Oaxaca, Mexico. Wageningen Universiteit. PhD dissertation.
2. Coomes, O. T., McGuire, S. J., Garine, E., Caillon, S., McKey, D., Demeulenaere, E., et al. (2015). Farmer seed networks make a limited contribution to agriculture? Four common misconceptions. Food Policy, 56, 41–50.
3. Creswell, J. W. (2007). Qualitative inquiry and research design: Choosing among five traditions (2nd ed.). Thousand Oaks: Sage Publications.
4. De Boef, W. S., & Thijssen, M. H. (2010). The principles, autonomy and entrepreneurship guide the strengthening of LSB development in Ethiopia. Local Seed Business Newsletter Issue 6; September 2010.
5. Gibson, R. W. (2013). How sweet potato varieties are distributed in Uganda: actors, constraints and opportunities. Food Security, 5(6), 781–791.