APA (7th ed.) Citation

Dougill, P., & Knott, R. (1988). The primary language book (1. publ.). Open Univ. Pr.

Chicago Style (17th ed.) Citation

Dougill, Peter, and Richard Knott. The Primary Language Book. 1. publ. Milton Keynes u.a: Open Univ. Pr, 1988.

MLA (9th ed.) Citation

Dougill, Peter, and Richard Knott. The Primary Language Book. 1. publ. Open Univ. Pr, 1988.