Cullen, J. (2013). Essaying the past: How to read, write, and think about history (2nd ed.). Wiley-Blackwell.
Lua i Stíl Chicago (17ú heag.)Cullen, Jim. Essaying the Past: How to Read, Write, and Think About History. 2nd ed. Chichester [England] ; Malden, Mass.: Wiley-Blackwell, 2013.
Lua MLA (9ú heag.)Cullen, Jim. Essaying the Past: How to Read, Write, and Think About History. 2nd ed. Wiley-Blackwell, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.