Cita APA (7th ed.)

Yap-Patron, I. (1999). English plus-a communicative approach (textbook-workbook) for first year college students. Great Books Trading.

Cita Chicago (17th ed.)

Yap-Patron, Ida. English Plus-a Communicative Approach (textbook-workbook) for First Year College Students. Sikatuna Village, Quezon City: Great Books Trading, 1999.

Cita MLA (9th ed.)

Yap-Patron, Ida. English Plus-a Communicative Approach (textbook-workbook) for First Year College Students. Great Books Trading, 1999.