Gumperz, J. J. (1972). Directions in sociolinguistics: The ethnography of communication. Holt, Rinehart and Winston.
芝加哥风格引文Gumperz, John Joseph. Directions in Sociolinguistics: The Ethnography of Communication. New York [u.a.]: Holt, Rinehart and Winston, 1972.
MLA引文Gumperz, John Joseph. Directions in Sociolinguistics: The Ethnography of Communication. Holt, Rinehart and Winston, 1972.
警告：这些引文格式不一定是100％准确.
