APA (7e ed.) Bronvermelding

Hatfield, N. J. (1978). Basic market, research techniques for transit systems. U.S. Department of Commerce.

Chicago (17e ed.) Bronvermelding

Hatfield, Nancy J. Basic Market, Research Techniques for Transit Systems. Austin: U.S. Department of Commerce, 1978.

MLA (9e ed.) Bronvermelding

Hatfield, Nancy J. Basic Market, Research Techniques for Transit Systems. U.S. Department of Commerce, 1978.