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Dr. Larry Martin, ed. Azusa Street Library, 12 vols (Christian Life Books, 1999-2014).

Dr. Otto J. Klink, Why I Am Not an Evolutionist (Gospel Publishing House, 1931).

Ernest S. Williams, Systematic Theology, 3 vols (Gospel Publishing House, 1953).

P. C. Nelson, Bible Doctrines (Gospel Publishing House, 1948).

Harold Horton, The Gifts of the Spirit (Gospel Publishing House, 1934).

John Sherrill, They Speak with Other Tongues (Chosen Books, 2018).

Cecil Robeck, The Azusa Street Mission and Revival (Thomas Nelson, 2017).

Vinson Synan, The Holiness-Pentecostal Tradition (Eerdmans, 1997).