Further Reading
Fehr, W.R. 1987. Principles of cultivar development. Macmillan Publ. Co., New York.
Lee, D.J. 2002. Quantitative traits [Online]. Available at: https://passel2.unl.edu/view/lesson/0c7ef2c492fa (verified 17 April 2019)
Lee, D.J. and P. Hain. 2002. Just the facts [Online]. Available at: https://passel2.unl.edu/view/lesson/b8d5e17a4a96 (verified 17 April 2019)