Special Eurobarometer 270: Attitudes of EU citizens towards Animal Welfare, http://ec.europa.eu/food/animal/welfare/survey/sp_barometer_aw_en.pdf, p. 32.
Speciale Eurobarometro 270: Atteggiamenti dei cittadini dell’UE nei confronti del benessere degli animali, http://ec.europa.eu/food/animal/welfare/survey/sp_barometer_aw_en.pdf, pag.32.