APA
Anderson J. R., Hazell P. B. R. & International Food Policy Research Institute. (1989). Variability in grain yields. Baltimore: Published for the International Food Policy Research Institute [by] the Johns Hopkins University Press.
Chicago
Anderson Jock R, Hazell P B R and International Food Policy Research Institute. 1989. Variability in grain yields. Baltimore: Published for the International Food Policy Research Institute [by] the Johns Hopkins University Press.
Harvard
Anderson J. R., Hazell P. B. R. and International Food Policy Research Institute. (1989). Variability in grain yields. Baltimore: Published for the International Food Policy Research Institute [by] the Johns Hopkins University Press.
MLA
Anderson Jock R, Hazell P B R and International Food Policy Research Institute. Variability in grain yields. Baltimore: Published for the International Food Policy Research Institute [by] the Johns Hopkins University Press. 1989.