Wittgenstein, L., Pears, D. F., & McGuinness, B. (2001). Tractatus logico philosophicus. Routledge.
Dyfyniad Arddull ChicagoWittgenstein, Ludwig, David Francis Pears, and Brian McGuinness. Tractatus Logico Philosophicus. London: Routledge, 2001.
Dyfyniad MLAWittgenstein, Ludwig, et al. Tractatus Logico Philosophicus. Routledge, 2001.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.