Lua APA (7ú heag.)

Valino, A. (1999). A cement firm committed to clean environment. Manila Bulletin.

Lua i Stíl Chicago (17ú heag.)

Valino, Amada. "A Cement Firm Committed to Clean Environment." Manila Bulletin 1999.

Lua MLA (9ú heag.)

Valino, Amada. "A Cement Firm Committed to Clean Environment." Manila Bulletin, 1999.

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