Hatfield, N. J. (1978). Basic market, research techniques for transit systems. U.S. Department of Commerce.
Цитирование в стиле Чикаго (17-е изд.)Hatfield, Nancy J. Basic Market, Research Techniques for Transit Systems. Austin: U.S. Department of Commerce, 1978.
Цитирование MLA (9-е изд.)Hatfield, Nancy J. Basic Market, Research Techniques for Transit Systems. U.S. Department of Commerce, 1978.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.