Usman, E. K. (1999). Acting Governor Isnaji's role in Zambo crisis cited. Manila Bulletin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUsman, Edd K. "Acting Governor Isnaji's Role in Zambo Crisis Cited." Manila Bulletin 1999.
एमएलए (9वां संस्करण) प्रशस्ति पत्रUsman, Edd K. "Acting Governor Isnaji's Role in Zambo Crisis Cited." Manila Bulletin, 1999.
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