Paradis, W. H., & Thompson, A. D. (1976). Where are the 6.6 million?: A statistical survey of Catholic elementary and secondary formal religious education 1965-1974. Publications Office, United States Catholic Conference.
Lua i Stíl Chicago (17ú heag.)Paradis, Wilfrid H., agus Andrew D. Thompson. Where Are the 6.6 Million?: A Statistical Survey of Catholic Elementary and Secondary Formal Religious Education 1965-1974. Washington: Publications Office, United States Catholic Conference, 1976.
Lua MLA (8ú heag.)Paradis, Wilfrid H., agus Andrew D. Thompson. Where Are the 6.6 Million?: A Statistical Survey of Catholic Elementary and Secondary Formal Religious Education 1965-1974. Publications Office, United States Catholic Conference, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.