Lua APA (7ú heag.)

Warriner, J. E. (1977). English grammar and composition: Fourth course (Heritage ed.). HBJ.

Lua i Stíl Chicago (17ú heag.)

Warriner, John E. English Grammar and Composition: Fourth Course. Heritage ed. New York: HBJ, 1977.

Lua MLA (9ú heag.)

Warriner, John E. English Grammar and Composition: Fourth Course. Heritage ed. HBJ, 1977.

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