O'Halloran, K., & Jewitt, C. (2009). Historical Changes in the Semiotic Landscape: From Calculation to Computation. Routledge.
Chicago Style (17th ed.) CitationO'Halloran, Kay, and C. Jewitt. Historical Changes in the Semiotic Landscape: From Calculation to Computation. Routledge, 2009.
MLA (9th ed.) CitationO'Halloran, Kay, and C. Jewitt. Historical Changes in the Semiotic Landscape: From Calculation to Computation. Routledge, 2009.
Warning: These citations may not always be 100% accurate.