The course is based on careful readings of primary source documents, with commentaries.

本课程需要对基本阅读材料进行仔细的阅读，然后进行评论。

youdao

National or regional NNAs can have access to the primary source documents.

FORBES: LEI -- Think Global, Register Local, Says CUSIP

Partnering with local universities or foundations, they scoured local archives and repositories owned by artists, their families, universities or museums, to identify, scan and catalog the primary source documents, selectively, for inclusion in the archive.

WSJ: Mari Carmen Ram��rez | Derivative Works No More | Cultural Conversation by Judith H. Dobrzynski