Allerton, D. J., Skandera, P., & Tschichold, C. (2002). Perspectives on English as a world language. International Cooper series in English language and literature.
Chicago Style (17th ed.) CitationAllerton, David J., Paul Skandera, and Cornelia Tschichold. "Perspectives on English as a World Language." International Cooper Series in English Language and Literature 2002.
MLA (9th ed.) CitationAllerton, David J., et al. "Perspectives on English as a World Language." International Cooper Series in English Language and Literature, 2002.
Warning: These citations may not always be 100% accurate.