GZYRA, Dariusz. Dlaczego fleksiweganizm? [Recenzja książki Petera Singera Why Vegan? Eating Ethically. New York–London: Liveright Publishing Corporation, 2020]. Zoophilologica. Polish Journal of Animal Studies, [S. l.], n. 1 (9), p. 1–6, 2022. DOI: 10.31261/ZOOPHILOLOGICA.2022.09.09. Disponível em: https://trrest.vot.pl/ojsus/index.php/ZOOPHILOLOGICA/article/view/12569. Acesso em: 6 maj. 2025.