Law, Stephen, author
The great philosophers: the lives and ideas of history's greatest thinkers
Quersus, 2013
 Buku Teks
The world's great thinkers: Man and Spirit; the speculative philosophers
ed. by Saxe Commins & Robert N. Linscott.
Random House , 1947
 Buku Teks
Lodge, Rupert, author
The great thinkers
Routledge, 1949
 Buku Teks
Gomperz, Theodor, author
Greek thinkers a history of ancient philosophy
John Murray , 1955
 Buku Teks
Philosophy of Language : key thinkers
Barry Lee, editor
Continuum International Pub. Group, 2011
 Buku Teks