Album No. 20
MLA
Williams, Jonathan, 1929-2008. Album No. 20. Box 20. circa 1992. https://collections.library.yale.edu/catalog/2046365.
APA, 6th edition
Williams, Jonathan, 1929-2008. (["Box 20"])(circa 1992)[Album No. 20]. https://collections.library.yale.edu/catalog/2046365.