APA-ийн эшлэл(7 дахь хэвлэлт)

Ryder, R. D., & Singer, P. (2015). Speciesism, painism and happiness: A morality for the twenty-first century. Imprint Academic.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Ryder, Richard D., ба Peter Singer. Speciesism, Painism and Happiness: A Morality for the Twenty-first Century. Exeter, England: Imprint Academic, 2015.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Ryder, Richard D., ба Peter Singer. Speciesism, Painism and Happiness: A Morality for the Twenty-first Century. Imprint Academic, 2015.