ALLSOP, J. (1988). Penguin english tests book 1. Penguin Books.
Cita Chicago Style (17a ed.)ALLSOP, Jake. Penguin English Tests Book 1. London: Penguin Books, 1988.
Cita MLA (9a ed.)ALLSOP, Jake. Penguin English Tests Book 1. Penguin Books, 1988.
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