Wittgenstein, L., & Ogden, C. K. (1983). Letters to C.K. Ogden with comments on the English translation of the Tractatus logico-Philosophicus. Blackwell.
Chicago-viite (17. p.)Wittgenstein, Ludwig, ja Charles Kay Ogden. Letters to C.K. Ogden with Comments on the English Translation of the Tractatus Logico-Philosophicus. Oxford: Blackwell, 1983.
MLA-viite (9. p.)Wittgenstein, Ludwig, ja Charles Kay Ogden. Letters to C.K. Ogden with Comments on the English Translation of the Tractatus Logico-Philosophicus. Blackwell, 1983.
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