With Juan Trippe
MLA
Lindbergh, Charles A. (Charles Augustus), 1902-1974. With Juan Trippe. Box 9, folder 14. 1929 September 5. https://collections.library.yale.edu/catalog/10012463.
APA, 6th edition
Lindbergh, Charles A. (Charles Augustus), 1902-1974. (["Box 9, folder 14"])(1929 September 5)[With Juan Trippe]. https://collections.library.yale.edu/catalog/10012463.