MLA

Corwin, Charles Edward, 1868-1958. Reformed Church in America: A Record of Beginnings. Tercentenary Studies [excerpt]. Box 2 | Folder 28. 1928. https://collections.library.yale.edu/catalog/10577983.

APA, 6th edition

Corwin, Charles Edward, 1868-1958. (["Box 2 | Folder 28"])(1928)[Reformed Church in America: A Record of Beginnings. Tercentenary Studies [excerpt]]. https://collections.library.yale.edu/catalog/10577983.