Cita APA

Pinker, S. 1., & Pinker, S. 1. (2011). The better angels of our nature: Why violence has declined. New York, New York: Viking.

Citación estilo Chicago

Pinker, Steven 1954-, y Steven 1954- Pinker. The Better Angels of Our Nature: Why Violence Has Declined. New York, New York: Viking, 2011.

Cita MLA

Pinker, Steven 1954-, y Steven 1954- Pinker. The Better Angels of Our Nature: Why Violence Has Declined. New York, New York: Viking, 2011.