They were all filled with the Holy Ghost, and began to speak with other tongues, as the Spirit gave them utterance. –Acts 2:4 (KJV)

On the Gentiles also was poured out the gift of the Holy Ghost. For they heard them speak with tongues, and magnify God. –Acts 10:45-46 (KJV)

When Paul had laid his hands upon them, the Holy Ghost came on them; and they spake with tongues, and prophesied. –Acts 19:6 (KJV)

E. S. Williams, Systematic Theology, vol. 3 (Gospel Publishing House, 1953), chs. 6-9.

P. C. Nelson, Bible Doctrines (Gospel Publishing House, 1948), ch. 8.

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