APA
McCullough E. B., Pingali P. L. & Stamoulis K. G. (2008). The Transformation of agri-food systems. London: Earthscan.
Chicago
McCullough Ellen B, Pingali Prabhu L and Stamoulis Kostas G. 2008. The Transformation of agri-food systems. London: Earthscan.
Harvard
McCullough E. B., Pingali P. L. and Stamoulis K. G. (2008). The Transformation of agri-food systems. London: Earthscan.
MLA
McCullough Ellen B, Pingali Prabhu L and Stamoulis Kostas G. The Transformation of agri-food systems. London: Earthscan. 2008.