Spencer, H. (1880). Illustrations of universal progress: A series of discussions. D. Appleton and company.
Цитирование в стиле Чикаго (17-е изд.)Spencer, Herbert. Illustrations of Universal Progress: A Series of Discussions. New York: D. Appleton and company, 1880.
Цитирование MLA (9-е изд.)Spencer, Herbert. Illustrations of Universal Progress: A Series of Discussions. D. Appleton and company, 1880.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.
