In São Paulo, Brazil
MLA
Lindbergh, Charles A. (Charles Augustus), 1902-1974. In São Paulo, Brazil. Box 19, folder 15. 1969 August 28. https://collections.library.yale.edu/catalog/10013336.
APA, 6th edition
Lindbergh, Charles A. (Charles Augustus), 1902-1974. (["Box 19, folder 15"])(1969 August 28)[In São Paulo, Brazil]. https://collections.library.yale.edu/catalog/10013336.