MLA

Delany, Samuel R., 1942-. "Dammerung", "Driftnotes". Box 137. undated. https://collections.library.yale.edu/catalog/31963584.

APA, 6th edition

Delany, Samuel R., 1942-. (["Box 137"])(undated)["Dammerung", "Driftnotes"]. https://collections.library.yale.edu/catalog/31963584.