Lua APA (7ú heag.)
Gumperz, J. J., & Hymes, D. H. (1972). Directions in sociolinguistics: The ethnography of communication. Holt, Rinehart and Winston.
Lua i Stíl Chicago (17ú heag.)
Gumperz, John Joseph, agus Dell H. Hymes. Directions in Sociolinguistics: The Ethnography of Communication. New York: Holt, Rinehart and Winston, 1972.
Lua MLA (9ú heag.)
Gumperz, John Joseph, agus Dell H. Hymes. Directions in Sociolinguistics: The Ethnography of Communication. Holt, Rinehart and Winston, 1972.
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