ピーター・ハッカー
Frege : Logical Excavations, (Blackwell, Oxford, O.U.P., N.Y., 1984) (ISBN 0-19-503261-6) co-authored with G.P. Baker.
Language, Sense and Nonsense, a critical investigation into modern theories of language (Blackwell, 1984) (ISBN 0-631-13519-7) co-authored with G.P. Baker.
Scepticism, Rules and Language (Blackwell, 1984) (ISBN 0-631-13614-2) co-authored with G.P. Baker.
Wittgenstein : Rules, Grammar, and Necessity – Volume 2 of an analytical commentary on the Philosophical Investigations (Blackwell, Oxford, UK and Cambridge, Massachusetts, 1985) (ISBN 0-631-13024-1)(ISBN 0-631-16188-0) co-authored with G.P. Baker. It was extensively revised in 2014 (ISBN 1-118-85459-4)
Insight and Illusion: Wittgenstein on Philosophy and the Metaphysics of Experience (Clarendon Press, Oxford, 1972)
Insight and Illusion – themes in the philosophy of Wittgenstein (extensively revised edition) (Clarendon Press, Oxford, 1986) (ISBN 0-19-824783-4)
Wittgenstein : Understanding and Meaning, Volume 1 of an analytical commentary on the Philosophical Investigations (Blackwell, Oxford, and Chicago University Press, Chicago, 1980)(ISBN 0-631-12111-0)(ISBN 0226035263)(ISBN 0226035409), co-authored with G.P. Baker. It was extensively revised in 2009 and published in two parts by Wiley-Blackwell(ISBN 1405199245)(ISBN 1405199253).