Ingersoll, G. E. (1932). Hand methods of placer mining and placer mining districts of Washington and Oregon. State College of Washington.
Цитирование в стиле Чикаго (17-е изд.)Ingersoll, Guy Ernest. Hand Methods of Placer Mining and Placer Mining Districts of Washington and Oregon. [Pullman: State College of Washington, 1932.
Цитирование MLA (8-е изд.)Ingersoll, Guy Ernest. Hand Methods of Placer Mining and Placer Mining Districts of Washington and Oregon. State College of Washington, 1932.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.