APA (7e ed.) Bronvermelding

Advertising Age's Business Marketing. Crain Communications Inc. (MI).

Chicago (17e ed.) Bronvermelding

Advertising Age's Business Marketing. Crain Communications Inc. (MI).

MLA (9e ed.) Bronvermelding

Advertising Age's Business Marketing. Crain Communications Inc. (MI).

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