Yap-Patron, I. (1999). English plus: A communicative approach (textbook-workbook) for first year college students. Great Books Trading.
Citace podle Chicago (17th ed.)Yap-Patron, Ida. English Plus: A Communicative Approach (textbook-workbook) for First Year College Students. Quezon City: Great Books Trading, 1999.
Citace podle MLA (9th ed.)Yap-Patron, Ida. English Plus: A Communicative Approach (textbook-workbook) for First Year College Students. Great Books Trading, 1999.
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