Lua APA (7ú heag.)
Ryder, R. D., & Singer, P. (2015). Speciesism, painism and happiness: A morality for the twenty-first century. Imprint Academic.
Lua i Stíl Chicago (17ú heag.)
Ryder, Richard D., agus Peter Singer. Speciesism, Painism and Happiness: A Morality for the Twenty-first Century. Exeter, England: Imprint Academic, 2015.
Lua MLA (9ú heag.)
Ryder, Richard D., agus Peter Singer. Speciesism, Painism and Happiness: A Morality for the Twenty-first Century. Imprint Academic, 2015.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.