Robert Breaker is a follower of Peter Ruckman, which couild be considered a cult,   but on this subject he is good
Charismatic Confusion in Evangelism
Charles Fox Parham, who associated glossolalia with the baptism in the Holy Spirit
The Apostolic Faith Mission on Azusa Street, now considered to be the birthplace of Pentecostalism
William Seymour, leader of the Azusa Street Revival