Hornby, A. S. (1964). Oxford progressive english alterntive course: Book a teacher's handbook. U.pr..
Cita Chicago Style (17a ed.)Hornby, A. S. Oxford Progressive English Alterntive Course: Book a Teacher's Handbook. London: U.pr., 1964.
Cita MLA (9a ed.)Hornby, A. S. Oxford Progressive English Alterntive Course: Book a Teacher's Handbook. U.pr., 1964.
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