Sanderson, R. W. (1961). Our urban frontier: The 1961 opportunity and responsibility of Massachusetts Congregationalism. Congregational Board of Missions.
Lua i Stíl Chicago (17ú heag.)Sanderson, Ross Warren. Our Urban Frontier: The 1961 Opportunity and Responsibility of Massachusetts Congregationalism. New York: Congregational Board of Missions, 1961.
Lua MLA (8ú heag.)Sanderson, Ross Warren. Our Urban Frontier: The 1961 Opportunity and Responsibility of Massachusetts Congregationalism. Congregational Board of Missions, 1961.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.