APA (7e ed.) Bronvermelding

Sicam, E. L. (1999). How reliable are telephone opinion polls. Philippine Daily Inquirer.

Chicago (17e ed.) Bronvermelding

Sicam, Edmund L. "How Reliable Are Telephone Opinion Polls." Philippine Daily Inquirer 1999.

MLA (9e ed.) Bronvermelding

Sicam, Edmund L. "How Reliable Are Telephone Opinion Polls." Philippine Daily Inquirer, 1999.

Let op: Deze citaties zijn niet altijd 100% accuraat.