(1998). An act granting the Sultan Kudarat Telephone System, Inc., a franchise to construct, establish, install, maintain and operate local exchange network in the province of Sultan Kudarat. Manila Times.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र"An Act Granting the Sultan Kudarat Telephone System, Inc., a Franchise to Construct, Establish, Install, Maintain and Operate Local Exchange Network in the Province of Sultan Kudarat." Manila Times 1998.
एमएलए (9वां संस्करण) प्रशस्ति पत्र"An Act Granting the Sultan Kudarat Telephone System, Inc., a Franchise to Construct, Establish, Install, Maintain and Operate Local Exchange Network in the Province of Sultan Kudarat." Manila Times, 1998.
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