Publications listed in this guide can be cited using your prefered format (see some options in box below) but need to includes some elements more unique to unpublished archival sources.
Unpublished sources may not have all the elements you are used to including for publications but that doesn't mean you don't include them in you list of works cited. Citations for an archival items usually include the following:
Collection name (example: Mary Mendenhall Hobbs Papers)
Repository name and institution (example: Friends Historical Collection, Guilford College)
Repository location (example: Greensboro, N.C.)
You also need to note other details, such as the item name and date, when quoting for pieces within a larger collection. For example, the author and date of a letter. Depending upon the particular collection, you may also need to include a series title and/or folder title.
[item], [folder title], [series title (if any)], [collection name], [accession or manuscript number], Friends Historical Collection, Guilford College, Greensboro, N.C.
Guide to Citing with Turabian and Chicago
Citation Builder (NC State University) - APA, MLA, CBE, Chicago