Aydin, Mahmut
The Council for Research in Values and Philosophy, 2002
Buku Teks
Aziz-Us-Samad, Ulfat
Begum Aisha Bawany Wakf, 1970
Buku Teks
Mir-Kasimo, Orkhan
Brill, 2017
eBooks
Plamen Makariev
The Council for Research in Values and Philosophy, 2001
Buku Teks
Netton, Ian Richard
Edinburgh University Press, 2011
Buku Teks