North, S. U., & Widenhouse, P. M. (1947). Field report, Portuguese Mission Chapel, Providence, Rhode Island. Board of Home Missions, Cong. Christian Churches.
Lua i Stíl Chicago (17ú heag.)North, Stanley U., agus Philip M. Widenhouse. Field Report, Portuguese Mission Chapel, Providence, Rhode Island. New York: Board of Home Missions, Cong. Christian Churches, 1947.
Lua MLA (8ú heag.)North, Stanley U., agus Philip M. Widenhouse. Field Report, Portuguese Mission Chapel, Providence, Rhode Island. Board of Home Missions, Cong. Christian Churches, 1947.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.