Lua APA (7ú heag.)

Villanueva, J. (2002). A position paper against House Bill No. 4110. IN Educators speak [column]. Manila Bulletin.

Lua i Stíl Chicago (17ú heag.)

Villanueva, Jose. "A Position Paper Against House Bill No. 4110. IN Educators Speak [column]." Manila Bulletin 2002.

Lua MLA (9ú heag.)

Villanueva, Jose. "A Position Paper Against House Bill No. 4110. IN Educators Speak [column]." Manila Bulletin, 2002.

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