„Nettie Maria Stevens (1861-1912): her life and contributions to cytogenetics“. Proceedings of the American Philosophical Society. 125-jild, № 4. August 1981. 292–311-bet. JSTOR986332. PMID11620765.
„Nettie Maria Stevens (1861-1912): her life and contributions to cytogenetics“. Proceedings of the American Philosophical Society. 125-jild, № 4. August 1981. 292–311-bet. JSTOR986332. PMID11620765.