Perkins, J. (1976). A quiet revolution: The Christian response to human need, a strategy for today. Word Books.
Lua i Stíl Chicago (17ú heag.)Perkins, John. A Quiet Revolution: The Christian Response to Human Need, a Strategy for Today. Waco, Tex.: Word Books, 1976.
Lua MLA (9ú heag.)Perkins, John. A Quiet Revolution: The Christian Response to Human Need, a Strategy for Today. Word Books, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.