Leiss, W., Kline, S. and Jhally, S. 1986:

Social Communication in Advertising.

London: Methuen.

Leith, D. 983:

A Social History of English . London: Routledge.

Levinson, S.:

1979: Activity types and language.

Linguistics , 17, 365-99.

1983:

Cambridge: Cambridge University

Halaman tidak diketahui