Purpura, J. E. (2013). Assessing grammar (Second edition, reprinted.). Cambridge: Cambridge University Press.
Citación estilo ChicagoPurpura, James E. Assessing Grammar. Second edition, reprinted. Cambridge: Cambridge University Press, 2013.
Cita MLAPurpura, James E. Assessing Grammar. Second edition, reprinted. Cambridge: Cambridge University Press, 2013.
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