Template:Ref-Hill1999
From Embryology
Hill MA. UNSW Embryology https://web.archive.org/web/19990218135205/http://anatomy.med.unsw.edu.au/cbl/embryo Internet Archive updated February 18 1999. Accessed December 6, 2014.
Hill MA. UNSW Embryology https://web.archive.org/web/19990218135205/http://anatomy.med.unsw.edu.au/cbl/embryo Internet Archive updated February 18 1999. Accessed December 6, 2014.