APA (7e ed.) Bronvermelding

Não informado. (1967). Communications designers digest. Douglas Communications.

Chicago (17e ed.) Bronvermelding

Não informado. Communications Designers Digest. New York: Douglas Communications, 1967.

MLA (8e ed.) Bronvermelding

Não informado. Communications Designers Digest. Douglas Communications, 1967.

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