Weber, G. P., & Joyce, J. M. (1984). The challenge to trust. Benziger.
Lua i Stíl Chicago (17ú heag.)Weber, Gerard P., agus John M. Joyce. The Challenge to Trust. Encino, Calif.: Benziger, 1984.
Lua MLA (8ú heag.)Weber, Gerard P., agus John M. Joyce. The Challenge to Trust. Benziger, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.