Durkin, J. T. (1963). Georgetown University: The middle years, 1840-1900. Georgetown University Press.
Lua i Stíl Chicago (17ú heag.)Durkin, Joseph T. Georgetown University: The Middle Years, 1840-1900. Washington: Georgetown University Press, 1963.
Lua MLA (8ú heag.)Durkin, Joseph T. Georgetown University: The Middle Years, 1840-1900. Georgetown University Press, 1963.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.