Bilgera, M. D., Montealegre, M. A. C., & Quilala, F. N. P. (1993). Philippine ripples: Textbook in communication arts in English for first year high school. Rex Book Store.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBilgera, Melchora D., Ma. Antoinette Cusi Montealegre, और Felicidad N. Pilar Quilala. Philippine Ripples: Textbook in Communication Arts in English for First Year High School. Manila: Rex Book Store, 1993.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBilgera, Melchora D., et al. Philippine Ripples: Textbook in Communication Arts in English for First Year High School. Rex Book Store, 1993.
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