De Leon, M. V. (2003). US government hikes duty-free privileges of local products. Manila Times.
Chicago-viite (17. p.)De Leon, Max V. "US Government Hikes Duty-free Privileges of Local Products." Manila Times 2003.
MLA-viite (9. p.)De Leon, Max V. "US Government Hikes Duty-free Privileges of Local Products." Manila Times, 2003.
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