APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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

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