APA-referens (7:e uppl.)

Philippines. Provincial Planning and Development Office. (2001). Socio-economic profile: Ifugao. Provincial Planning and Development Office.

Chicago-referens (17:e uppl.)

Philippines. Provincial Planning and Development Office. Socio-economic Profile: Ifugao. Ifugao: Provincial Planning and Development Office, 2001.

MLA-referens (9:e uppl.)

Philippines. Provincial Planning and Development Office. Socio-economic Profile: Ifugao. Provincial Planning and Development Office, 2001.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.