Citazione Stile APA (7a Edizione)

PERKINS, W. H. (1978). Human perspectives in speech and language disorders. The C.V.Mosby co.

Citazione stile Chigago Style (17a edizione)

PERKINS, William H. Human Perspectives in Speech and Language Disorders. Saint Louis: The C.V.Mosby co, 1978.

Citatione MLA (9a ed.)

PERKINS, William H. Human Perspectives in Speech and Language Disorders. The C.V.Mosby co, 1978.