Philippines & Nolledo, M. S. (2006). The Expanded senior citizens act of 2003: (Republic Act No. 9257) and implementing regulations (2nd ed.). National Book Store.
Chicago-referens (17:e uppl.)Philippines och Mercedita S. Nolledo. The Expanded Senior Citizens Act of 2003: (Republic Act No. 9257) and Implementing Regulations. 2nd ed. Mandaluyong City: National Book Store, 2006.
MLA-referens (9:e uppl.)Philippines och Mercedita S. Nolledo. The Expanded Senior Citizens Act of 2003: (Republic Act No. 9257) and Implementing Regulations. 2nd ed. National Book Store, 2006.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.