Philippines. National Statistics Office. (2007). 2007 Philippine yearbook. National Statistics Office.
Chicago-referens (17:e uppl.)Philippines. National Statistics Office. 2007 Philippine Yearbook. Manila: National Statistics Office, 2007.
MLA-referens (9:e uppl.)Philippines. National Statistics Office. 2007 Philippine Yearbook. National Statistics Office, 2007.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.