"Yu Chang, foo" [?] to Peter Parker
MLA
Parker, Peter, 1804-1888. "Yu Chang, foo" [?] to Peter Parker. n.d.. https://collections.library.yale.edu/catalog/16808693.
APA, 6th edition
Parker, Peter, 1804-1888. (n.d.)["Yu Chang, foo" [?] to Peter Parker]. https://collections.library.yale.edu/catalog/16808693.