Purpura, J. E. \. P. (1991). Intermediate ScottForesman english. On target 1. ScottForesman1.
Chicago Style (17th ed.) CitationPurpura, James E. \ Pinkley. Intermediate ScottForesman English. On Target 1. Estados Unidos: ScottForesman1, 1991.
MLA (8th ed.) CitationPurpura, James E. \ Pinkley. Intermediate ScottForesman English. On Target 1. ScottForesman1, 1991.
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