Citazione Stile APA (7a Edizione)

Brown, R. (1973). A first language: The early stages. Harvard University Press.

Citazione stile Chigago Style (17a edizione)

Brown, Roger. A First Language: The Early Stages. Cambridge: Harvard University Press, 1973.

Citatione MLA (9a ed.)

Brown, Roger. A First Language: The Early Stages. Harvard University Press, 1973.