1. Mendel, Gregor Johann. Versuche über Pflanzen-Hybride006E. Verh. Naturf. Vereines Brünn (1865), 1866, 4, 3–47
2. Bateson, William. Mendel’s principles of heredity. Cambridge, Univ. Press, 1909
3. Vries, Hugo Marie de. Die Mutationstheorie. 2 vols. Leipzig, Veit & Co., 1901–3
4. Galton, Sir Francis. Natural inheritance. London, Macmillan & Co., 1889
5. Bateson, William. Materials for the study of variation treated with especial regard to discontinuity in the origin of species. London, Macmillan & Co., 1894