Template:Ref-Spaulding1921
From Embryology
Spaulding MH. The development of the external genitalia in the human embryo. (1921) Carnegie Instn. Wash. Publ., Contrib. Embryol. 13: 69 – 88.
Spaulding MH. The development of the external genitalia in the human embryo. (1921) Carnegie Instn. Wash. Publ., Contrib. Embryol. 13: 69 – 88.