The posting of links does not constitute an endorsement of the sites linked, and not necessarily even agreement with the specific posts linked. [The Pentecostal Church link demonstrates that some go so far as to posit three kinds of tongues]
* A Response to Bart Barber's Questions regarding the Relationship of Tongues in Acts and 1 Corinthians 12-14 -- "Glossolalia is not speaking in foreign languages that one has never learned. The phenomenon of which Paul spoke had no vocabulary, recognizable grammar, and syntax through which thoughts were being communicated elsewhere in the world."
* Are there different types of "speaking in tongues"? -- "Still others claim 1 Corinthians 14.2 refers to a special prayer language."
* The Gift of Tongues: Comparing the Church Fathers with Contemporary Pentecostalism -- "Chrysostom...saw the phenomenon in Acts (in both its nature and function) as identical with that in Corinthians."
* Three types of speaking in tongues -- "There are three types of speaking in tongues. Each type has a different purpose."
* Two Kinds of Tongues? -- "The idea that the tongues in 1 Corinthians are categorically different from the tongues in Acts is a distinctly modern charismatic interpretation."
* Two Types of Tongues? -- "Throughout chapter 12, the gift of tongues is closely associated with other gifts including the gift of prophecy and the gift of the interpretation of tongues."