APA (7th ed.) Citation

Dougill, P. (1993). The primary language book / Peter Dougill (2nd ed.). Open University Press.

Chicago Style (17th ed.) Citation

Dougill, Peter. The Primary Language Book / Peter Dougill. 2nd ed. Buckingham: Open University Press, 1993.

MLA (9th ed.) Citation

Dougill, Peter. The Primary Language Book / Peter Dougill. 2nd ed. Open University Press, 1993.

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