APA (7th ed.) Citation

Coulmas, F. (1989). The writing systems of the world. B. Blackwell.

Chicago Style (17th ed.) Citation

Coulmas, Florian. The Writing Systems of the World. Oxford, UK ; New York, NY, USA: B. Blackwell, 1989.

MLA (9th ed.) Citation

Coulmas, Florian. The Writing Systems of the World. B. Blackwell, 1989.