Russell, Bertrand, 1872-1970, author
Routledge, 2001
Buku Teks
Young-Joo, Ahn, author
Alex Media Komputindo, 2012
Buku Teks
Lasker, Emanuel, author
Dover, 1965
Buku Teks
Vinogradoff, Paul, 1854-1925, author
Oxford University Press, 1970
Buku Teks
Wagner, Wolgang, author
Palgrave Macmillan, 2005
Buku Teks