Παραπομπή σε μορφή APA (7η εκδ.)

Wittgenstein, L., & Ogden, C. K. (1983). Letters to C.K. Ogden with comments on the English translation of the Tractatus logico-Philosophicus. Blackwell.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Wittgenstein, Ludwig, και Charles Kay Ogden. Letters to C.K. Ogden with Comments on the English Translation of the Tractatus Logico-Philosophicus. Oxford: Blackwell, 1983.

Παραπομπή σε μορφή MLA (9th εκδ.)

Wittgenstein, Ludwig, και Charles Kay Ogden. Letters to C.K. Ogden with Comments on the English Translation of the Tractatus Logico-Philosophicus. Blackwell, 1983.