Cita APA (7a ed.)
Pardey, P. G., Alston, J. M., & Piggott, R. R. (2006). Shifting ground: Agricultural R&D worldwide. International Food Policy Research Institute.
Cita Chicago Style (17a ed.)
Pardey, Philip G., Julian M. Alston, y Roley R. Piggott. Shifting Ground: Agricultural R&D Worldwide. International Food Policy Research Institute, 2006.
Cita MLA (9a ed.)
Pardey, Philip G., et al. Shifting Ground: Agricultural R&D Worldwide. International Food Policy Research Institute, 2006.
Precaución: Estas citas no son 100% exactas.