De Leon, M. V. (2003). US government hikes duty-free privileges of local products. Manila Times.
Chicago-referens (17:e uppl.)De Leon, Max V. "US Government Hikes Duty-free Privileges of Local Products." Manila Times 2003.
MLA-referens (9:e uppl.)De Leon, Max V. "US Government Hikes Duty-free Privileges of Local Products." Manila Times, 2003.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.