APA (7e ed.) Bronvermelding

Hopkin, J. M. (1981). The role of an understanding of social factors in forecasting car ownership. Transport and Road Research Laboratory.

Chicago (17e ed.) Bronvermelding

Hopkin, Jean M. The Role of an Understanding of Social Factors in Forecasting Car Ownership. Crowthorne, Berkshire: Transport and Road Research Laboratory, 1981.

MLA (9e ed.) Bronvermelding

Hopkin, Jean M. The Role of an Understanding of Social Factors in Forecasting Car Ownership. Transport and Road Research Laboratory, 1981.