Coba jelasin Baca juga dari Gereja dong

Daftar denominasi Kristen menurut jumlah anggota

Gereja tinggi dan gereja rendah

Kehadiran umat dalam peribadatan di gereja

Peran Gereja dalam memajukan peradaban umat manusia

University of Virginia: Dictionary of the History of Ideas: Christianity in History, temu balik tanggal 10 Mei 2007

University of Virginia: Dictionary of the History of Ideas: Church as an Institution, temu balik tanggal 10 Mei 2007

Christianity and the Roman Empire, Ancient History Romans, BBC Home, temu balik tanggal 10 Mei 2007

Orthodox Church, MSN Encarta, temu balik tanggal 10 Mei 2007

Mark Gstohl, Theological Perspectives of the Reformation, The Magisterial Reformation, temu balik tanggal 10 Mei 2007

J. Faber, The Catholicity of the Belgic Confession, Spindle Works, The Canadian Reformed Magazine 18 (20–27 September, 4–11, 18 Oktober, 1, 8, November 1969)-

Boise State University: History of the Crusades: The Fourth Crusade

Konferensi Waligereja Katolik Amerika Serikat: PASAL 9 "AKU PERCAYA AKAN GEREJA KATOLIK YANG KUDUS": 830-831  : Memuat tafsir Katolik atas istilah katolik

Kenneth D. Whitehead, Four Marks of the Church, EWTN Global Catholic Network

Apostolic Succession, The Columbia Encyclopedia, Edisi ke-6. Mei 2001.

Gerd Ludemann, Heretics: The Other Side of Early Christianity, Westminster John Knox Press, edisi Amerika pertama (Agustus 1996), ,

From Jesus to Christ: Maps, Archaeology, and Sources: Chronology, PBS, temu balik tanggal 19 Mei 2007

Bannerman, James, The Church of Christ: A treatise on the nature, powers, ordinances, discipline and government of the Christian Church, Still Waters Revival Books, Edmonton, Edisi Cetak Ulang May 1991, Edisi Pertama 1869.

Grudem, Wayne, Systematic Theology: An Introduction to Biblical Doctrine, Inter-Varsity Press, Leicester, Inggris, 1994.

Kuiper, R.B., The Glorious Body of Christ, The Banner of Truth Trust, Edinburgh, 1967

Mannion, Gerard & Mudge, Lewis (penyunting), The Routledge Companion to the Christian Church, 2007