Sancianco, G. G., & Alzona, E. (1975). The progress of the Philippines: Economic, administrative and political studies. National Historical Institute.
Chicago-Zitierstil (17. Ausg.)Sancianco, Gregorio Goson, und Encarnacion Alzona. The Progress of the Philippines: Economic, Administrative and Political Studies. Manila, Philippines: National Historical Institute, 1975.
MLA-Zitierstil (9. Ausg.)Sancianco, Gregorio Goson, und Encarnacion Alzona. The Progress of the Philippines: Economic, Administrative and Political Studies. National Historical Institute, 1975.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.