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The following posts are extractions from Laurie Petrou's 2006 article McLuhan and Concrete Poetry: Sound, Language and Retribalization.

1. APA: Petrou, L. (2006). McLuhan and Concrete Poetry: Sound, Language and Retribalization. Canadian journal of Media Studies, 1(1), 1-25.
2. Chicago: Laurie Petrou. "McLuhan and Concrete Poetry: Sound, Language and Retribalization." Canadian journal of Media Studies 1, no. 1 (2006): 1-25.