Lua APA (7ú heag.)

Villanueva, M. A. (2000). NSO computerization program launched. Philippine Star.

Lua i Stíl Chicago (17ú heag.)

Villanueva, Marichu A. "NSO Computerization Program Launched." Philippine Star 2000.

Lua MLA (9ú heag.)

Villanueva, Marichu A. "NSO Computerization Program Launched." Philippine Star, 2000.

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