Cita APA (7a ed.)

Vandermeer, J. H. (1989). The ecology of intercropping. University Press.

Cita Chicago Style (17a ed.)

Vandermeer, John H. The Ecology of Intercropping. Cambridge: University Press, 1989.

Cita MLA (8a ed.)

Vandermeer, John H. The Ecology of Intercropping. University Press, 1989.