Morawetz, T., & Wittgenstein, L. (1978). Wittgenstein & knowledge: The importance of On certainty. University of Massachusetts Press.
Citazione stile Chigago Style (17a edizione)Morawetz, Thomas, e Ludwig Wittgenstein. Wittgenstein & Knowledge: The Importance of On Certainty. Amherst, Mass: University of Massachusetts Press, 1978.
Citatione MLA (8a ed.)Morawetz, Thomas, e Ludwig Wittgenstein. Wittgenstein & Knowledge: The Importance of On Certainty. University of Massachusetts Press, 1978.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.