APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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