Primary source
Source document and primary source are semantically related in source topic. In some cases you can use "Source document" instead a noun phrase "Primary source".
Source document
Primary source and source document are semantically related in source topic. You can use "Primary source" instead a noun "Source document".
Cite this Source
Source document and Primary source. (2016). Retrieved 2026, July 30, from https://thesaurus.plus/related/primary_source/source_document
Primary source & Source document. N.p., 2016. Web. 30 Jul. 2026. <https://thesaurus.plus/related/primary_source/source_document>.
Source document or Primary source. 2016. Accessed July 30, 2026. https://thesaurus.plus/related/primary_source/source_document.
Google Ngram Viewer shows how "primary source" and "source document" have occurred on timeline