Aldaba, R. (2005). Does a cartel run the oil industry. Philippine Daily Inquirer.
Lua i Stíl Chicago (17ú heag.)Aldaba, Rafaelita. "Does a Cartel Run the Oil Industry." Philippine Daily Inquirer 2005.
Lua MLA (9ú heag.)Aldaba, Rafaelita. "Does a Cartel Run the Oil Industry." Philippine Daily Inquirer, 2005.
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