Primary sources are no different to cite than other types of materials. A basic citation contains four components:
Here are a few examples of primary source references and in-text citations. However, as with all references, the reference itself will depend on the type of resources, and the information available about that resource. To learn more about citing archival material, visit the APA Style Blog.
Malay spinning girls [Photograph]. (ca. 1860-1900). Colonial Office photographic collection (CO 1069-484-026), The National Archives UK, Richmond, United Kingdom. https://www.flickr.com/photos/nationalarchives/7886229088/in/album-72157631302263418/
In-text: ("Malay spinning girls," 1860-1900).
Format: Author, A. A., Authorb, B. B., Authorc, C. C., & Authord, D. D. (YYYY). [Description of letter]. Name of collection, Repository, museum or owner, Museum Location. URL
Kanjeng Kyai Angrurah Jambe of Badung & Kyai Angrurah Agung of Mengwi. (1768). [Letter in Balinese on a sheet of gold]. British Library Digitised Manuscripts (Egerton MS 765). http://www.bl.uk/manuscripts/FullDisplay.aspx?ref=Egerton_MS_765
In-text: (Kanjeng Kyai Angrurah Jambe of Badung & Kyai Angrurah Agung of Mengwi, 1768).
Advertisement from an online museum or archival collection
Liebig's Extract of Meat Company. (1907). Antica pagoda sul fiume Hue [Advertisement]. Images of colonialism collection (Asia series), Widener Library, Harvard University, Cambridge, MA, United States. http://id.lib.harvard.edu/images/olvwork400401/catalog
In-text: (Liebig's Extract of Meat Company, 1907).