Huelar, C. . I. (1997). Service improvement is a continuing commitment of Uniship Inc. Manila Chronicle.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHuelar, Carmela I. "Service Improvement Is a Continuing Commitment of Uniship Inc." Manila Chronicle 1997.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHuelar, Carmela I. "Service Improvement Is a Continuing Commitment of Uniship Inc." Manila Chronicle, 1997.
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