Roperos, G. M. (2004). In search of a key to nationhood. IN Ground level [column]. Manila Times.
Chicago-viite (17. p.)Roperos, Godofredo M. "In Search of a Key to Nationhood. IN Ground Level [column]." Manila Times 2004.
MLA-viite (9. p.)Roperos, Godofredo M. "In Search of a Key to Nationhood. IN Ground Level [column]." Manila Times, 2004.
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