Singer, Peter. «Make Meat-Eaters Pay: Ethicist Proposes Radical Tax, Says they’re Killing Themselves and the Planet». Derecho Animal. Forum of Animal Law Studies 1, no. 1 (febrero 1, 2010): 1–3. Accedido mayo 17, 2026. https://revistes.uab.cat/da/article/view/v1-n1-singer.