APA (7th ed.) Citation
Thornton, P. K., & Jones, P. G. (2009). Four degrees and beyond: What might this mean for agriculture in sub-Saharan Africa? International Livestock Research Institute.
Chicago Style (17th ed.) Citation
Thornton, Philip K., and Peter G. Jones. Four Degrees and Beyond: What Might This Mean for Agriculture in Sub-Saharan Africa? International Livestock Research Institute, 2009.
MLA (9th ed.) Citation
Thornton, Philip K., and Peter G. Jones. Four Degrees and Beyond: What Might This Mean for Agriculture in Sub-Saharan Africa? International Livestock Research Institute, 2009.
Warning: These citations may not always be 100% accurate.