Philippines. National Statistics Office. (2000). Survey on overseas Filipinos 1997-1998. National Statistics Office.
Chicago-referens (17:e uppl.)Philippines. National Statistics Office. Survey on Overseas Filipinos 1997-1998. Manila: National Statistics Office, 2000.
MLA-referens (9:e uppl.)Philippines. National Statistics Office. Survey on Overseas Filipinos 1997-1998. National Statistics Office, 2000.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.