http://www.ipsn.org/cc97.html[自述来源] (页面存档备份,存于互联网档案馆) Nolan, John Matthew "2,543 Days: A history of the Hotel at the GrandRapids Dam on the Wabash River"
(原始内容存档于2020-12-09). Robert M. Bowman Jr, 《Understanding Jehova's Witness》,GrandRapids MI: Baker Book House, 1992年; Samuel Hass: "While this work indicates
STYLE c05 Orr, Karin, We meet face to face, but see only a face, The GrandRapids Press, 1995-09-17: j1 Ortega, Mary, Caught in the act: America's bathroom