Teaching American English Pronunciation (Oxford Handbooks for Language Teachers)

I was asssigned this book in a non-credit ESL pronunciation course, and found it a bit less complex than the "bible" on the subject, Celce-Murcia. Good clear explanations throughout. This subject involves some memorization and study to master it properly, but as a teacher you'll be amply rewarded when with a few tips on lip and tongue placement the correct sound magically emerges from your student's mouth. Has a good section on specific problems depending on the L1 of the student.

the book has a great section on pronunciation problem for specific first-language groups (for example, the problems that many Taiwanese or Spanish speakers face), but it could have more pictures about mouth shape and how to make the pronunciation sounds

I use this book quite a bit when teaching pronunciation. While this smaller volume isn't as thorough as Celce-Murcia, et al.'s Teaching Pronunciation... I find that it's a very good supplement. I use the two books together. A practical and very classroom-oriented guide for teachers. Recommended.