PNP MEMORANDUM CIRCULAR NO. 2005-003, February 18, 2008
PNP-ASG SUPERVISION OVER PRIVATE SECURITY AGENCIES AND SECURITY PERSONNEL PERFORMING AVIATION SECURITY AND AVIATION SECURITY RELATED TRAINING AT INTERNATIONAL AND DOMESTIC AIRPORTS
National Administrative Register February 18, 2008
Text Available at Office of the National Administrative Register U.R Law Complex, Diliman, Quezon City