Pojman, Louis P., author
Wadsworth and Cengage Learning, 2012
Buku Teks
edited by Hugh LaFollette and Ingmar Persson
Wiley Blackwell, 2013
Buku Teks
selected and edited by Wilfrid Sellars and John Hospers
Appleton-Century-Crofts, 1952
Buku Teks
Ralph, Joseph
Watts, 1946
Buku Teks
Tannsjo, Torbjorn, author
Edinburgh University Press, 2010
Buku Teks