edited by Joel Feinberg, Hyman Gross
Wadsworth, 1977
Buku Teks
Fieser, James, author
Oxford University Press, 2005
Buku Teks
Chan, Wing-Tsit, author
Princeton University Press, 1963
Buku Teks
Tymieniecka, Anna-Teresa
Springer, 2012
eBooks
edited by A.P. Martinich
Blackwell, 2007
Buku Teks