Group methods of studying occupations

Chicago citation style
Billings, Mildred Ella (Lincoln) 1889-. Group methods of studying occupations. 1941. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/002560306. (Accessed December 18, 2018.)
APA citation style
Billings, Mildred Ella (Lincoln) 1889-, (1941) Group methods of studying occupations. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/002560306
MLA citation style
Billings, Mildred Ella (Lincoln) 1889-. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/002560306>.
Note: These citations are programmatically generated and may be incomplete.