Cita APA (7th ed.)
DeFries, R. S., & Brown, P. (2014). The big ratchet: How humanity thrives in the face of natural crisis : a biography of an ingenious species. Basic Books.
Cita Chicago (17th ed.)
DeFries, Ruth S., i Pauline Brown. The Big Ratchet: How Humanity Thrives in the Face of Natural Crisis : A Biography of an Ingenious Species. New York: Basic Books, 2014.
Cita MLA (9th ed.)
DeFries, Ruth S., i Pauline Brown. The Big Ratchet: How Humanity Thrives in the Face of Natural Crisis : A Biography of an Ingenious Species. Basic Books, 2014.
Atenció: Aquestes cites poden no estar 100% correctes.