Is Speaking with Tongues the Initial Evidence of the Spirit Baptism? 
Essay explores speaking in tongues as one of the basic tenets of Pentecostalism.
http://www.abortionessay.com/files/Spirit.htmlA Conciliatory Approach to Speaking in Tongues 
Examines Scripture to evaluate the modern Pentecostal belief that glossalalia is always the initial evidence of baptism in the Holy Spirit.
http://www.geocities.com/ian4christ41/
Holy Spirit Baptised with Bible Evidence 
Pentecostal basis from Scripture for speaking in tongues as proof of being baptised in the Holy Spirit.
http://www.born-again-christian.info/tongues.htm
By One Spirit 
Articles about baptism in the Spirit and speaking in tongues, as God's confirmation or self-appointed sign under the new covenant.
http://byonespirit.com/
Prophecy and Tongues: A Compilation of the Best Cessationist Arguments 
Lee Irons summarizes points made in Richard Gaffin's "Perspectives on Pentecost."
http://www.upper-register.com/other_studies/prophecy_tongues.html
Assemblies of God: Baptism in the Holy Spirit 
Explains speaking in tongues as the initial evidence of Spirit baptism.
http://www.ag.org/top/beliefs/Position_Papers/pp_4185_spirit-filled_life.cfm
Prayer That Prevails 
Explains what tongues are, tells how to receive them, and explores the ways in which they benefit the believer.
http://www.teachingpages.co.uk/studyZone/stage3.php?class8part1
Baptism in the Holy Spirit 
Defends the present day practice of praying in tongues as a key to the power of God.
http://www.christian-faith.com/forjesus/baptism-in-the-holy-spirit/