Clark, V. P. (1994). Language: Introductory readings (5th.ed.). St.Martin's.
Lua i Stíl Chicago (17ú heag.)Clark, Virginia P. Language: Introductory Readings. 5th.ed. New York: St.Martin's, 1994.
Lua MLA (9ú heag.)Clark, Virginia P. Language: Introductory Readings. 5th.ed. St.Martin's, 1994.
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