ピーター・ハッカー
Appearance and Reality – a philosophical investigation into perception and perceptual qualities (Blackwell, 1987) (ISBN 0-631-15704-2)
Wittgenstein : Meaning and Mind, Volume 3 of an Analytical Commentary on the Philosophical Investigations (Blackwell, Oxford and Cambridge, Massachusetts, 1990) (ISBN 0-631-18739-1). It was extensively revised in 2019 and published in two parts by Wiley-Blackwell (ISBN 1118951808)(ISBN 1118951751).
Wittgenstein: Mind and Will, Volume 4 of an Analytical Commentary on the Philosophical Investigations (Blackwell, 1996) (ISBN 0-631-18739-1)