Vibal, M. R. (2012). How bills become Philippine laws. Published and exclusively distributed by Anvil Publishing, Inc.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रVibal, Mafeo R. How Bills Become Philippine Laws. Mandaluyong City: Published and exclusively distributed by Anvil Publishing, Inc, 2012.
एमएलए (9वां संस्करण) प्रशस्ति पत्रVibal, Mafeo R. How Bills Become Philippine Laws. Published and exclusively distributed by Anvil Publishing, Inc, 2012.
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