Voetnoot
a Bron: Navorsingsraad vir Sosiale Wetenskappe, “Religion and Spirituality Among University Scientists,” deur Elaine Howard Ecklund, 5 Februarie 2007.
a Bron: Navorsingsraad vir Sosiale Wetenskappe, “Religion and Spirituality Among University Scientists,” deur Elaine Howard Ecklund, 5 Februarie 2007.