Cita APA (7a ed.)
So, H., Kirchhof, G., Bakker, R., & Smith, G. (2001). Low input tillage/cropping systems for limited resource areas. Elsevier.
Cita Chicago Style (17a ed.)
So, H.B, G. Kirchhof, R. Bakker, y G.D Smith. Low Input Tillage/cropping Systems for Limited Resource Areas. Elsevier, 2001.
Cita MLA (9a ed.)
So, H.B, et al. Low Input Tillage/cropping Systems for Limited Resource Areas. Elsevier, 2001.
Precaución: Estas citas no son 100% exactas.