Sicam, E. L. (1999). How reliable are telephone opinion polls. Philippine Daily Inquirer.
Style de citation Chicago (17e éd.)Sicam, Edmund L. "How Reliable Are Telephone Opinion Polls." Philippine Daily Inquirer 1999.
Style de citation MLA (9e éd.)Sicam, Edmund L. "How Reliable Are Telephone Opinion Polls." Philippine Daily Inquirer, 1999.
Attention : ces citations peuvent ne pas être correctes à 100%.