Cita APA (7a ed.)

Whitehead, D. C. (1995). Grassland nitrogen. CAB International.

Cita Chicago Style (17a ed.)

Whitehead, D. C. Grassland Nitrogen. Wallingford: CAB International, 1995.

Cita MLA (8a ed.)

Whitehead, D. C. Grassland Nitrogen. CAB International, 1995.