APA-referens (7:e uppl.)

Lopez, H. E., & Fajutagana, L. M. (1999). At the helm of the U.P: Presidential accents. Office of the Secretary of the University, University of the Philippines System.

Chicago-referens (17:e uppl.)

Lopez, Helen E., och Leonora M. Fajutagana. At the Helm of the U.P: Presidential Accents. Quezon City: Office of the Secretary of the University, University of the Philippines System, 1999.

MLA-referens (9:e uppl.)

Lopez, Helen E., och Leonora M. Fajutagana. At the Helm of the U.P: Presidential Accents. Office of the Secretary of the University, University of the Philippines System, 1999.