Cita APA (7a ed.)
Twomlow, S., Rohrbach, D., & Rusike, J. (2006). Spreading the word on fertilizer. International Crops Research Institute for the Semi-Arid Tropics.
Cita Chicago Style (17a ed.)
Twomlow, Stephen, David Rohrbach, y Joseph Rusike. Spreading the Word on Fertilizer. International Crops Research Institute for the Semi-Arid Tropics, 2006.
Cita MLA (9a ed.)
Twomlow, Stephen, et al. Spreading the Word on Fertilizer. International Crops Research Institute for the Semi-Arid Tropics, 2006.
Precaución: Estas citas no son 100% exactas.