एपीए उद्धरण

Ofek, H. (2001). Second nature: Economic origins of human evolution. Cambridge, U.K: Cambridge University Press.

शिकागो स्टाइल उद्धरण

Ofek, Haim. Second Nature: Economic Origins of Human Evolution. Cambridge, U.K: Cambridge University Press, 2001.

एमएलए उद्धरण

Ofek, Haim. Second Nature: Economic Origins of Human Evolution. Cambridge, U.K: Cambridge University Press, 2001.