APA Citation

Gorlee, D. L. Wittgenstein's secret diaries: Semiotic writing in cryptography.

Chicago Style Citation

Gorlee, Dinda L. Wittgenstein's Secret Diaries: Semiotic Writing in Cryptography.

MLA Citation

Gorlee, Dinda L. Wittgenstein's Secret Diaries: Semiotic Writing in Cryptography.

Warning: These citations may not always be 100% accurate.