Butterfield, H.
Christianity and history
Charles Scribner's Sons, 1950
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Robertson, John M.
A short history of Christianity
Watts & Co, 1931
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Niebuhr, Reinhold
Faith and history comparison of Christian and modern views of history
Charles Scribner's Sons, 1949
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Spain and the rule of law / International Commision of Jurists
International Commision of Jurists, 1962
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Piggin, Stuart
Faith of steel a history of the Christian churches in Illawarra, Australia
University of Wollongong, 1984
 Buku Teks SO