Allsop, J. (1988). Penguin english tests. Penguin Books.
Cita Chicago Style (17a ed.)Allsop, Jake. Penguin English Tests. London: Penguin Books, 1988.
Cita MLA (9a ed.)Allsop, Jake. Penguin English Tests. Penguin Books, 1988.
Precaución: Estas citas no son 100% exactas.
