Cita APA

Grigg, D. B. (1974). The agricultural systems of the world: An evolutionary approach. [S.l.]: New York : Cambridge University Press.

Citación estilo Chicago

Grigg, David B. The Agricultural Systems of the World: An Evolutionary Approach. [S.l.]: New York : Cambridge University Press, 1974.

Cita MLA

Grigg, David B. The Agricultural Systems of the World: An Evolutionary Approach. [S.l.]: New York : Cambridge University Press, 1974.