APA (7th ed.) Citation

Calvet, L. J., & Brown, A. (2006). Towards an ecology of world languages. Polity.

Chicago Style (17th ed.) Citation

Calvet, Louis Jean, and Andrew Brown. Towards an Ecology of World Languages. Cambridge: Polity, 2006.

MLA (9th ed.) Citation

Calvet, Louis Jean, and Andrew Brown. Towards an Ecology of World Languages. Polity, 2006.