Cita APA (7th ed.)

Bernthal, J. E., & Bankson, N. W. (1988). Articulation and phonological disorders (2nd ed.). Prentice Hall.

Cita Chicago (17th ed.)

Bernthal, John E., i Nicholas W. Bankson. Articulation and Phonological Disorders. 2nd ed. Englewood Cliffs, N.J: Prentice Hall, 1988.

Cita MLA (9th ed.)

Bernthal, John E., i Nicholas W. Bankson. Articulation and Phonological Disorders. 2nd ed. Prentice Hall, 1988.