Judovitz, Dalia
Cambridge University Press , 1988
Buku Teks
Sedgwick, Peter R.
Blackwell, 2001
Buku Teks
cambridge, 2006
Buku Teks
Roy Wood Sellars; V.J. McGill; Marvin Farber (editor)
Macmillan, 1949
Buku Teks
edited by I. Grattan-Guinness
Routledge, 1994
Buku Referensi