APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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

Warning: These citations may not always be 100% accurate.