Denning, K. M., Kessler, B., & Leben, W. R. (2006). English vocabulary elements (2nd ed.). Oxford University Press.
Cita Chicago Style (17a ed.)Denning, Keith M., Brett Kessler, y William Ronald Leben. English Vocabulary Elements. 2nd ed. Oxford ; New York: Oxford University Press, 2006.
Cita MLA (9a ed.)Denning, Keith M., et al. English Vocabulary Elements. 2nd ed. Oxford University Press, 2006.
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