Abrea, L. A. Y. (2004). Child labor-profile of working children in Pampanga. University of the Philippines Diliman Extension Program in Pampanga.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAbrea, Lea Angeli Y. Child Labor-profile of Working Children in Pampanga. Pampanga: University of the Philippines Diliman Extension Program in Pampanga, 2004.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAbrea, Lea Angeli Y. Child Labor-profile of Working Children in Pampanga. University of the Philippines Diliman Extension Program in Pampanga, 2004.
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