◼ Republic Act No. 9710

Source: https://www.officialgazette.gov.ph/2009/08/14/republic-act-no-9710/

◼ Republic Act No. 7192

Source: https://www.officialgazette.gov.ph/1992/02/12/republic-act-no-7192/

◼ Proclamation No. 1172

Source: https://www.officialgazette.gov.ph/2006/11/17/proclamation-no-1172-s-2006/

◼ Republic Act No. 10398

Source: https://www.officialgazette.gov.ph/2013/03/19/republic-act-no-10398/