1. Anzaku, T. A. K., Salau, E. S. (2017). Niche marketing potentials for farm entrepreneurs in Nigeria. Journal of Agricultural Extension, 21(3):136-142.;
2. Baccar, M., Bouaziz, A., Dugué, P., Gafsi, M., Le Gal, P. Y. (2019). The determining factors of farm sustainability in a context of growing agricultural intensification. Agroecology and Sustainable Food Systems, 43(4):386-408.;
3. Born, H., Bachmann, J. (2006). Adding value to farm products: An overview. ATTRA - National Sustainable Agriculture Information Service, Fayetteville, USA, pp. 1-12.;
4. Červenski, J., Medić-Pap, S. (2018). Proizvodnja kupusa. monografija, Institut za ratarstvo i povrtarstvo, Novi Sad, Srbija.;
5. Coltrain, D., Barton, D., Boland, M. (2000). Value Added: Opportunities and Strategies. Arthur Capper Cooperative Center, Department of Agricultural Economics, Kansas State University, Manhattan, USA.;