Alvarez, V. M. (1998). Zamboanga City tagged as illegal drugs outpost. Manila Times.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAlvarez, Vic M. "Zamboanga City Tagged as Illegal Drugs Outpost." Manila Times 1998.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAlvarez, Vic M. "Zamboanga City Tagged as Illegal Drugs Outpost." Manila Times, 1998.
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