Associated Press. (2012). Colombia's president has prostate cancer. Philippine Daily Inquirer.
Cita Chicago (17th ed.)Associated Press. "Colombia's President Has Prostate Cancer." Philippine Daily Inquirer 2012.
Cita MLA (9th ed.)Associated Press. "Colombia's President Has Prostate Cancer." Philippine Daily Inquirer, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.