Francis W. Parker School Studies in Education. The University of Chicago Press.
Lua i Stíl Chicago (17ú heag.)Francis W. Parker School Studies in Education. The University of Chicago Press.
Lua MLA (9ú heag.)Francis W. Parker School Studies in Education. The University of Chicago Press.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.