VENTURINHA, Nuno. Sraffa’s Notes on Wittgenstein’s "Blue Book". Nordic Wittgenstein Review, [S. l.], v. 1, n. 1, 2012. Disponível em: https://www.nordicwittgensteinreview.com/article/view/NWR-1_2012-Venturinha. Acesso em: 4 feb. 2025.