Roebuck, David G (1999), "Restorationism and a Vision for World Harvest: A Brief History of the Church of God (Cleveland, Tennessee)" (PDF), Cyberjournal for Pentecostal-Charismatic Research, 5, retrieved June 12, 2011.
Roebuck, David G (1999), “Restorationism and a Vision for World Harvest: A Brief History of the Church of God (Cleveland, Tennessee)” (PDF), Cyberjournal for Pentecostal-Charismatic Research 5, truy cập ngày 12 tháng 6 năm 2011 .