I think it's like this -- /th/
http://www.google.com/search?hl=en&client=firefox-a&rls=org.mozilla%3Aen-US%3Aofficial&hs=AHa&q=slp+language+%22th%22+sound&btnG=Search
how do you transcribe the "th" sound in "SLP language"?
2 answers
These sites will give you sources for that information
http://en.wikipedia.org/wiki/Phonetic_transcription
http://www.herring.org/speech.html
http://en.wikipedia.org/wiki/Phonetic_transcription
http://www.herring.org/speech.html