References:

(a) The Ontario Association of Speech-Language Pathologists and Audiologists (2016). What is a Speech-Language Pathologist? 

(b) The Ontario Association of Speech-Language Pathologists and Audiologists (2016). What Services do Speech-Language Pathologists Provide?

(c) American Speech-Language-Hearing Association (ASHA) (2016). Speech-Language Pathologist: About Speech-Language Pathology. 

(d) The Ontario Association of Speech-Language Pathologists and Audiologists (2016). What Are Speech-Language Pathology Services Essential?