Jakeman, V., & McDowell, C. (2012). Cambridge Practice Tests for IELTS 1 (20th ed.). Cambridge New York: Cambridge University Press.
Trích dẫn kiểu ChicagoJakeman, Vanessa, và Clare McDowell. Cambridge Practice Tests for IELTS 1. 20th ed. Cambridge New York: Cambridge University Press, 2012.
MLA CitationJakeman, Vanessa, và Clare McDowell. Cambridge Practice Tests for IELTS 1. 20th ed. Cambridge New York: Cambridge University Press, 2012.
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