Sex Ratio of Births, 1981GWS: SR at birth 1981

Chicago citation style
G. William Skinner. Sex Ratio of Births, 1981,GWS: SR at birth 1981. 1981. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/skinner/id/1260. (Accessed July 20, 2018.)
APA citation style
G. William Skinner, (1981) Sex Ratio of Births, 1981,GWS: SR at birth 1981. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/skinner/id/1260
MLA citation style
G. William Skinner. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/skinner/id/1260>.
Note: These citations are programmatically generated and may be incomplete.