APA (7th ed.) Zitazioa

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

Chicago Style (17th ed.) Zitazioa

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

MLA (9th ed.) Zitazioa

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