Lua APA (7ú heag.)

Santos, N. U. (1997). An instrument of growth. Manila Chronicle.

Lua i Stíl Chicago (17ú heag.)

Santos, Nathaniel U. "An Instrument of Growth." Manila Chronicle 1997.

Lua MLA (9ú heag.)

Santos, Nathaniel U. "An Instrument of Growth." Manila Chronicle, 1997.

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