CAB RESOLUTION NO. 31 (BM3-5-11-2012), May 11, 2012
REPEAL OF LETTER OF INSTRUCTION NO. 1479 S. 1985, DECLARING AS INVALID TICKETS FOR INTERNATIONAL TRAVEL ISSUED OUTSIDE THE PHILIPPINES TO PASSENGERS ORIGINATING THEREFROM
National Administrative Register May 11, 2012
Text Available at the Office of the National Administrative Register, U.P. Law Complex, Diliman, Quezon City