Dictionary of Early Christian Literature by 
Encyclopedia of Early Christianity by 
Encyclopedia of the Early Church by 
New Catholic Encyclopedia by 
The Oxford Dictionary of the Christian Church by 
The Ante-Nicene Fathers : translations of the writings of the Fathers down to A. D. 325 by 
A Select library of Nicene and post-Nicene fathers of the Christian church. Second series. by 
Encyclopedia of Protestantism by 
Handbook of Denominations in the United States, 14th Edition by New Catholic Encyclopedia by 
The Oxford Encyclopedia of the Reformation by 
Encyclopedia of American Religious History by 
Encyclopedia of Religion in America by 
Encyclopedia of Religious Revivals in America by 
Religion and Politics in America by 
2010 U. S. Religion Census by 
Creeds and Confessions of Faith in the Christian Tradition by 
A Dictionary of Asian Christianity by