Philippines. Provincial Planning and Development Office. (2001). Socio-economic profile: Ifugao. Provincial Planning and Development Office.
Chicago-Zitierstil (17. Ausg.)Philippines. Provincial Planning and Development Office. Socio-economic Profile: Ifugao. Ifugao: Provincial Planning and Development Office, 2001.
MLA-Zitierstil (9. Ausg.)Philippines. Provincial Planning and Development Office. Socio-economic Profile: Ifugao. Provincial Planning and Development Office, 2001.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.