The following format for MLA style citations has been pulled from CSU's Citations for Archival Materials. Visit their guide for more sample citations and formatting rules for APA and Chicago styles.
Basic Format
Author Last Name, First Name. Title/description of material. Day Month Year. Collection
title. Collection identifier, Box number, Folder number. Name of repository, Location of
Repository. URL for digital materials.
If an author or creator is not named, begin the citation with the title or description of the material.
If there is no date, insert "Date unknown."
If the date is uncertain, insert "[possible date?]" (e.g., [1910?]).
Examples
Student Government Association. Constitution book. 1921. Student Government Association
records. 004-005, Box 1, Folder 2. Towson Special Collections and University Archives,
Towson University, Towson, MD.
Photograph of McFadden Alexander Newell in principal's office. 1887. Photographs Collection.
ph004046. Towson Special Collections and University Archives, Towson University,
Towson, MD. https://archives.towson.edu/Documents/Detail/mcfadden-alexander-newell-in-principals-office/72591