International Guide to Speech Acquisition: Dr. Sharynne McLeod's book is also highly recommended because it includes phonological information about 22 languages and 12 English dialects.

Multilingual Aspects of Speech Sound Disorders in Children: This book from Dr. Sharynne McLeod and Dr. Brian Goldstein offers principles for assessment and intervention of children who are exposed to more than one language. It features the work of researchers who consider multicultural and multilingual issues for people with speech sound disorders.