1. ESN (European Sensory Network) (1996). A European sensory and consumer study. A case study on coffee. Chipping Campden UK: CCFRA.
2. Fishbein, M., & Ajzen, I. (1975). Belief, attitude, intention and behavior: An introduction to theory and research. Reading, MA: Addison–Wesley.
3. Fruit & Vegetable Marketing Board. (1995). Frukt and grönsaker handbok, kvalitetsnormer. Stockholm, Sweden: Fruit & Vegetable Marketing Board.
4. Haglund, Å., Johnson, L., Berglund, L., & Dahlstedt, L. (1999). Sensory evaluation of carrots from ecological and conventional growing systems. Food Quality and Preference 10(1), 23–29.
5. Harper, R. (1987). Food acceptability, past, present and future. Proceedings of the University of Reading—Society of Chemical Industry Symposium on Food Acceptability, 14–18 September, University of Reading, UK.