Magnalite

Chicago citation style
John Gordon Rideout, American 1898-1951, Harold L. Van Doren, American, 1895-1957. Magnalite. ca. 1940. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Achndm_1993-150-31&repo=DPLA. (Accessed November 15, 2018.)
APA citation style
John Gordon Rideout, American 1898-1951, Harold L. Van Doren, American, 1895-1957, (ca. 1940) Magnalite. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Achndm_1993-150-31&repo=DPLA
MLA citation style
John Gordon Rideout, American 1898-1951, Harold L. Van Doren, American, 1895-1957. Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Achndm_1993-150-31&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.