Maas, E., Boylan, K., & Montgomery, A. (1990). Divine obedience: Ten years of Plowshares.
Lua i Stíl Chicago (17ú heag.)Maas, Elmer, Kathy Boylan, agus Anne Montgomery. Divine Obedience: Ten Years of Plowshares. 1990.
Lua MLA (8ú heag.)Maas, Elmer, et al. Divine Obedience: Ten Years of Plowshares. 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.