Brush, Stephen G. (June 1978). "Nettie M. Stevens and the Discovery of Sex Determination by Chromosomes". Isis69 (2): 162–172. doi:10.1086/352001. PMID389882.
Wessel, Gary M. (September 13, 2011). "Y does it work this way?". Molecular Reproduction and Development78 (9): Fm i. doi:10.1002/mrd.21390. PMID22095870.
Brush, Stephen G. (June 1978). "Nettie M. Stevens and the Discovery of Sex Determination by Chromosomes". Isis69 (2): 162–172. doi:10.1086/352001. PMID389882.
Wessel, Gary M. (September 13, 2011). "Y does it work this way?". Molecular Reproduction and Development78 (9): Fm i. doi:10.1002/mrd.21390. PMID22095870.