Παραπομπή APA

Robson, M. S. (2005). Language in theory. Routledge.

Παραπομπή Chicago Style

Robson, Mark Stockwell. Language in Theory. USA: Routledge, 2005.

Παραπομπή MLA

Robson, Mark Stockwell. Language in Theory. Routledge, 2005.