Abayan, H. M. (2001). Lt. Gen. Benjamin Palma Defensor, Jr: The visionary leader of the Philippine Air Force. Philippine Graphic.
Citazione stile Chigago Style (17a edizione)Abayan, Haydee M. "Lt. Gen. Benjamin Palma Defensor, Jr: The Visionary Leader of the Philippine Air Force." Philippine Graphic 2001.
Citatione MLA (9a ed.)Abayan, Haydee M. "Lt. Gen. Benjamin Palma Defensor, Jr: The Visionary Leader of the Philippine Air Force." Philippine Graphic, 2001.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.