APA استشهاد

Velleman, S. L. (2016). Speech sound disorders. Wolters Kluwer.

استشهاد بنمط شيكاغو

Velleman, Shelley Lynn. Speech Sound Disorders. London: Wolters Kluwer, 2016.

MLA استشهاد

Velleman, Shelley Lynn. Speech Sound Disorders. Wolters Kluwer, 2016.