Cita APA (7a ed.)

Pearson, C., & Ison, R. (1989). Agronomy of grassland systems. Cambridge University Press.

Cita Chicago Style (17a ed.)

Pearson, C.J, y R.L Ison. Agronomy of Grassland Systems. Cambridge: Cambridge University Press, 1989.

Cita MLA (8a ed.)

Pearson, C.J, y R.L Ison. Agronomy of Grassland Systems. Cambridge University Press, 1989.