The Halcyon Foundation
MLA
Pryce-Jones, Alan, 1908-2000. The Halcyon Foundation. Box 57, folder 2218. 1965-89. https://collections.library.yale.edu/catalog/17341201.
APA, 6th edition
Pryce-Jones, Alan, 1908-2000. (["Box 57, folder 2218"])(1965-89)[The Halcyon Foundation]. https://collections.library.yale.edu/catalog/17341201.