Woolverton, J. F. (2005). Robert H. Gardiner and the reunification of worldwide Christianity in the Progressive Era. University of Missouri Press.
Lua i Stíl Chicago (17ú heag.)Woolverton, John Frederick. Robert H. Gardiner and the Reunification of Worldwide Christianity in the Progressive Era. Columbia, Mo.: University of Missouri Press, 2005.
Lua MLA (9ú heag.)Woolverton, John Frederick. Robert H. Gardiner and the Reunification of Worldwide Christianity in the Progressive Era. University of Missouri Press, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.