Associated Press. (2012). Colombia's president has prostate cancer. Philippine Daily Inquirer.
Chicago-referens (17:e uppl.)Associated Press. "Colombia's President Has Prostate Cancer." Philippine Daily Inquirer 2012.
MLA-referens (9:e uppl.)Associated Press. "Colombia's President Has Prostate Cancer." Philippine Daily Inquirer, 2012.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.