Create a spot-on reference in APA 7 and 6
Basic rules
To cite an archival document or other materials contained in an archive in a list of references in accordance with the requirements of APA Style (7th edition), the following data should be included in the reference: name(s) of the author(s) (if applicable), document title, name of collection, document location data, name of archive, as well as city and country of the archive.
How to cite in a bibliography
Basic reference template:
Author(s). (Date). Document title. Name of Collection (Document location), Name of Archive, City, Country.
The data on a document's location in the archive can include its call number, folder, box, etc. All data necessary for retrieving the document from the archive should be cited in the reference.
For a document that does not have a title (which may be the case of letters), state its description in square brackets and without italics in place of the title:
Author(s). (Date). [Document description]. Name of Collection (Document location), Name of Archive, City, Country.
Examples of references
Hinds, B. (1964). Collision in the Arctic. Barbara Hinds fonds, MS-2-130 (Box 16, Folder 1), Dalhousie University Archives, Halifax, Nova Scotia, Canada.
[Anonymous letter to Chief Hanson]. (1977, February 22). Seattle Fire Department Central Files, 2801-03 (Box 11, Folder 4), Seattle Municipal Archives, Seattle, WA, United States.