Ronald, Pamela C., and Raoul W. Adamchak. "WHO OWNS THE SEED?." Tomorrow's Table: Organic Farming, Genetics, and the Future of Food. : Oxford University Press, 2008-04-24. Oxford Scholarship Online. 2008-05-01. Date Accessed 22 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195301755.001.0001/acprof-9780195301755-chapter-10>.
Ronald, P., & Adamchak, R.(2008-04-24). WHO OWNS THE SEED?. In Tomorrow's Table: Organic Farming, Genetics, and the Future of Food. : Oxford University Press. Retrieved 22 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195301755.001.0001/acprof-9780195301755-chapter-10.
Ronald, Pamela C., and Raoul W. Adamchak. "WHO OWNS THE SEED?." In Tomorrow's Table: Organic Farming, Genetics, and the Future of Food. : Oxford University Press, 2008-04-24. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195301755.001.0001/acprof-9780195301755-chapter-10.
Ronald PC, Adamchak RW. WHO OWNS THE SEED?. In: Ronald PC, Adamchak RW. Tomorrow's Table: Organic Farming, Genetics, and the Future of Food. Oxford University Press; 2008. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195301755.001.0001/acprof-9780195301755-chapter-10. Accessed May 22, 2013.