Quarterly Survey of Advertising Expenditure. Ascential Events (Europe) Limited.
Citazione stile Chigago Style (17a edizione)Quarterly Survey of Advertising Expenditure. Ascential Events (Europe) Limited.
Citatione MLA (9a ed.)Quarterly Survey of Advertising Expenditure. Ascential Events (Europe) Limited.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.