Bøker:
• Ashby, Michael & John Maidment 2005. Introducing Phonetic Science. (Cambridge Introductions to Language and Linguistics.) Cambridge: Cambridge University Press. ISBN: 0-521-00496-9 (Paperback)
• Odden, David 2013. Introducing Phonology. Second Edition. (Cambridge Introductions to Language and Linguistics.) Cambridge: Cambridge University Press. ISBN: 978-1107627970