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- Chronology of World History: Prehistory - AD 1491 (ABC-CLIO, 1999) [Ref. D11 .M3]
- Charts of Ancient and Medieval Church History (Zondervan, 2001) [examples]
- History World Timelines
- New Catholic Encyclopedia, 2d ed.
- New Westminster Dictionary of Church History (Westminster, 2008) [Ref. BR95 .W496]
- Oxford Dictionary of the Christian Church, 3rd ed. revised
- The Cambridge History of Christianity
- vol. 1: Origins to Constantine [270.1 O692o]
- vol. 2: Constantine to c. 600 [270.2 C7585c]
- vol. 3: Early Medieval Christianities, c. 600 - c. 1100 [BR252 .E27]
- vol. 4: Christianity in Western Europe, c. 1100 - c. 1500 [BR252 .C36]
- Creeds and Confessions of Faith in the Christian Tradition, vol 1 (ancient, Eastern, and medieval creeds) [Ref. BT990 .C64]
- For more reference sources consultsee: Reference UniverseWorks
Antiquity
- Encyclopedia of Early Christianity (Garland, 1997) [Ref. BR162.2 .E5]
- Encyclopedia of Ancient History (Wiley, 2014)
- Encyclopedia of the Early Church (Oxford, 1992) [Ref. BR66.5 .D5813]
- Concise Encyclopedia of Early Christianity (Liturgical Press, 1992) [Ref. BR95 .K395]
- Dictionary of Early Christian Literature (Herder and Herder, 2000) [Ref. BR66.5 L4813]
- Westminster Handbook to Patristic Theology (Westminster Press, 2004) [Ref. BR162.3 .M38]
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