Παραπομπή APA

Paul Johnston. (1989). Wittgenstein and moral philosophy. Routledge.

Παραπομπή Chicago Style

Paul Johnston. Wittgenstein and Moral Philosophy. London: Routledge, 1989.

Παραπομπή MLA

Paul Johnston. Wittgenstein and Moral Philosophy. Routledge, 1989.