Lua APA (7ú heag.)

Del Castillo, L. B. (2002). The business of infotech schools. Manila Times.

Lua i Stíl Chicago (17ú heag.)

Del Castillo, Leah B. "The Business of Infotech Schools." Manila Times 2002.

Lua MLA (9ú heag.)

Del Castillo, Leah B. "The Business of Infotech Schools." Manila Times, 2002.

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