Doronila, A. (1999). No vision or strategy in Estrada's Cha-cha. IN Analysis [column]. Philippine Daily Inquirer.
Lua i Stíl Chicago (17ú heag.)Doronila, Amando. "No Vision or Strategy in Estrada's Cha-cha. IN Analysis [column]." Philippine Daily Inquirer 1999.
Lua MLA (9ú heag.)Doronila, Amando. "No Vision or Strategy in Estrada's Cha-cha. IN Analysis [column]." Philippine Daily Inquirer, 1999.
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