APA (7th ed.) Citation

Brown, R. (1975). A first language: The early stages (4. print.). Harvard Univ. Press.

Chicago Style (17th ed.) Citation

Brown, Roger. A First Language: The Early Stages. 4. print. Cambridge u.a: Harvard Univ. Press, 1975.

MLA (9th ed.) Citation

Brown, Roger. A First Language: The Early Stages. 4. print. Harvard Univ. Press, 1975.