MLA

Johnston, Jill, and Hans Namuth. Happenings: A Cast of Characters. Harper's Bazaar, Inc., 1963. https://collections.library.yale.edu/catalog/10516282.

APA, 6th edition

Johnston, J., & Namuth, H. (1963). Happenings: A cast of characters [Clippings, Group portraits]. Harper's Bazaar, Inc., https://collections.library.yale.edu/catalog/10516282.