Wittgenstein's On Certainty: There Like Our Life

Wittgenstein on Knowledge and Certainty (Elements in the Philosophy of Ludwig Wittgenstein)

Certainty in Action: Wittgenstein on Language, Mind and Epistemology

Routledge Philosophy GuideBook to Wittgenstein and On Certainty (Routledge Guidebooks)

Wittgenstein for Theologians: Beyond Certainty (Cascade Companions)