APA (7e ed.) Bronvermelding

Não informado. (1968). Modern data products, systems, services. Modern Data Services.

Chicago (17e ed.) Bronvermelding

Não informado. Modern Data Products, Systems, Services. Framingham, Mass: Modern Data Services, 1968.

MLA (8e ed.) Bronvermelding

Não informado. Modern Data Products, Systems, Services. Modern Data Services, 1968.

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