Extending the Set of Speech Sounds
Nigel Hewlett, Janet Mackenzie Beck · 2013
Figure 4.2 in chapter 4 shows some key places of articulation, but is not exhaustive. The IPA chart includes two places of articulation that we have not yet described, and the extIPA chart includes some additional places of articulation that, though rarer in normal adult speech, may nonetheless occur in minority languages, in normally developing speech, or in speech disorder.