(1979). American journal of education. University of Chicago Press.
Lua i Stíl Chicago (17ú heag.)American Journal of Education. Chicago: University of Chicago Press, 1979.
Lua MLA (8ú heag.)American Journal of Education. University of Chicago Press, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.