1. American Speech‐Language‐Hearing Association. (2004).Preferred Practice Patterns for the Profession of Speech‐Language Pathology[Preferred Practice Patterns]. Retrieved fromhttp://www.asha.org/policy
2. American Speech‐Language‐Hearing Association. (2005).Roles and Responsibilities of Speech‐Language Pathologists With Respect to Augmentative and Alternative Communication: Position Statement[Position Statement]. Retrieved fromhttp://www.asha.org/policy
3. American Speech‐Language‐Hearing Association. (n.d.).Augmentative and Alternative Communication. Retrieved fromhttps://www.asha.org/Practice‐Portal/Professional‐Issues/Augmentative‐and‐Alternative‐Communication
4. Minspeak: A semantic compaction system that makes self‐expression easier for communicatively disabled individuals;Baker B.;Byte,1982