APA (7e ed.) Bronvermelding

Paul, R., & Norbury, C. (2012). Language disorders from infancy through adolescence: Listening, speaking, reading, writing, and communicating (4th edition.). Elsevier.

Chicago (17e ed.) Bronvermelding

Paul, Rhea, en Courtenay Norbury. Language Disorders from Infancy Through Adolescence: Listening, Speaking, Reading, Writing, and Communicating. 4th edition. St. Louis, MO: Elsevier, 2012.

MLA (9e ed.) Bronvermelding

Paul, Rhea, en Courtenay Norbury. Language Disorders from Infancy Through Adolescence: Listening, Speaking, Reading, Writing, and Communicating. 4th edition. Elsevier, 2012.