Concepcion, J. A. (2000). Loren: Pass solid waste bill, solve garbage crisis. Manila Times.
Chicago Style aipamenaConcepcion, John Anthony. "Loren: Pass Solid Waste Bill, Solve Garbage Crisis." Manila Times 2000.
MLA aipamenaConcepcion, John Anthony. "Loren: Pass Solid Waste Bill, Solve Garbage Crisis." Manila Times, 2000.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.