Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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