Belletti e Marescotti (2021), EVALUATING GEOGRAPHICAL INDICATIONS Guide to tailor evaluations for the development and improvement of geographical indications, FAO-DISEI. Il volume è scaricabile al link http://www.fao.org/3/cb6511en/cb6511en.pdf
Lo studio fa parte del programma FAO Quality and Origin (https://www.fao.org/in-action/quality-and-origin-program/en/)