A Practical Introduction to Phonetics (Oxford Textbooks in Linguistics) 2nd Edition by J. C. Catford (Author)

https://www.amazon.com/Practical-Introduction-Phonetics-Textbooks-Linguistics/dp/0199246351

Words in the Mind: An Introduction to the Mental Lexicon 4th Edition by Jean Aitchison (Author)

https://www.amazon.com/Words-Mind-Introduction-Mental-Lexicon/dp/0470656476

The Mind of a Savant: Language, Learning and Modularity 1st Edition by Neil Smith (Author), Ianthi-Maria Tsimpli (Author)

https://www.amazon.com/Mind-Savant-Language-Learning-Modularity/dp/0631190171

First and Second Language Acquisition: Parallels and Differences (Cambridge Textbooks in Linguistics) by Jürgen M. Meisel (Author)

https://www.amazon.com/First-Second-Language-Acquisition-Differences/dp/052155764X

First Language Acquisition 2nd Edition, Kindle Edition by Eve V. Clark (Author)

https://www.amazon.com/First-Language-Acquisition-Eve-Clark-ebook/dp/B007NW5314