Wittgenstein, L. (1997). Generally known as the blue and brown books. Blackwell.
Цитирование в стиле Чикаго (17-е изд.)Wittgenstein, Ludwig. Generally Known as the Blue and Brown Books. Blackwell, 1997.
Цитирование MLA (9-е изд.)Wittgenstein, Ludwig. Generally Known as the Blue and Brown Books. Blackwell, 1997.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.