Langan, J., & Goldstein, J. M. (2003). English brushup (3rd ed.). McGraw-Hill Higher Education.
Cita Chicago Style (17a ed.)Langan, John, y Janet M. Goldstein. English Brushup. 3rd ed. Boston: McGraw-Hill Higher Education, 2003.
Cita MLA (9a ed.)Langan, John, y Janet M. Goldstein. English Brushup. 3rd ed. McGraw-Hill Higher Education, 2003.
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