Cite your sources: give credit, and leave a trail

You'll use Chicago Style for this class.  Start here:  Chicago-Style Citation Quick Guide.

See also:  

      Chicago Manual of Style Online (Cornell Library licensed resource)

      Chicago Manual of Style, 16th edition (2010):  Olin Library Reference Z253 .U69 2010 Shelved at the Reference Desk.

      Citation Management (Cornell Library)  General advice, and links to other style guides and citation management software.

Some of the books on espionage in the Cornell library

Great Courses: free, online

Espionage and Covert Operations (Great Courses; available on the Internet Archive)