Dr. Barnes Sanitarium/ Stamford, Conn.
MLA
Dr. Barnes Sanitarium/ Stamford, Conn. Dr. Barnes' Sanitarium, 1923. https://collections.library.yale.edu/catalog/15789438.
APA, 6th edition
Dr. Barnes Sanitarium/ Stamford, Conn. (1923). [Postcards (AAT)]. Dr. Barnes' Sanitarium. https://collections.library.yale.edu/catalog/15789438.