Josephson, Matthew, author
McGraw-Hill, 1959
Buku Teks
James, Marquis, author
Harper and Brother, 1954
Buku Teks
Hetherington, John Aikman, 1907-, author
Faber & Faber, 1967
Buku Teks
Peeters, BenoƮt, 1956-, author
Polity Press, 2013
Buku Teks
Gopal, Sarvepalli, author
Oxford University Press, 1992
Buku Teks