MLA

Ernst, Max, 1891-1976, Ford, Charles Henri, Seligmann, Kurt, 1900-1962. Magic circles. 1942 Feb.-March. https://collections.library.yale.edu/catalog/10191768.

APA, 6th edition

Ernst, Max, 1891-1976, & Ford, Charles Henri, & Seligmann, Kurt, 1900-1962. (1942 Feb.-March)[Magic circles]. https://collections.library.yale.edu/catalog/10191768.