MLA

Lindbergh, Charles A. (Charles Augustus), 1902-1974. Pan American Airways trip to West Indies. Box 9, folder 15. 1929 September 22-29. https://collections.library.yale.edu/catalog/10013273.

APA, 6th edition

Lindbergh, Charles A. (Charles Augustus), 1902-1974. (["Box 9, folder 15"])(1929 September 22-29)[Pan American Airways trip to West Indies]. https://collections.library.yale.edu/catalog/10013273.