Egan, T. (2006). The worst hard time: The untold story of those who survived the great American dust bowl. Houghton Mifflin Co..
Цитирование в стиле Чикаго (17-е изд.)Egan, Timothy. The Worst Hard Time: The Untold Story of Those Who Survived the Great American Dust Bowl. Boston: Houghton Mifflin Co., 2006.
Цитирование MLA (8-е изд.)Egan, Timothy. The Worst Hard Time: The Untold Story of Those Who Survived the Great American Dust Bowl. Houghton Mifflin Co., 2006.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.