Chu, G. C. T., & Tiangco, C. F. (2011). Guiao-Chu scale (measure of performance). University of the Philippines Diliman Extension Program in Pampanga.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रChu, Gwen Charmaine T., और Cristabel Fagela Tiangco. Guiao-Chu Scale (measure of Performance). Pampanga: University of the Philippines Diliman Extension Program in Pampanga, 2011.
एमएलए (9वां संस्करण) प्रशस्ति पत्रChu, Gwen Charmaine T., और Cristabel Fagela Tiangco. Guiao-Chu Scale (measure of Performance). University of the Philippines Diliman Extension Program in Pampanga, 2011.
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