APA (7th ed.) Zitazioa

Quarterly Survey of Advertising Expenditure. Ascential Events (Europe) Limited.

Chicago Style (17th ed.) Zitazioa

Quarterly Survey of Advertising Expenditure. Ascential Events (Europe) Limited.

MLA (9th ed.) Zitazioa

Quarterly Survey of Advertising Expenditure. Ascential Events (Europe) Limited.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.