Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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