MLA

Kagan, Paul, 1943-1993. "Some Lessons Learned From Ten Years Residence in Llano Colony," several drafts, holograph and typescript, corrected. Box 2, folder 56. n.d.. https://collections.library.yale.edu/catalog/17157274.

APA, 6th edition

Kagan, Paul, 1943-1993. (["Box 2, folder 56"])(n.d.)["Some Lessons Learned From Ten Years Residence in Llano Colony," several drafts, holograph and typescript, corrected]. https://collections.library.yale.edu/catalog/17157274.