selected and introduced by Evan Luard
Macmillan, 1999
Buku Teks
Luard, Evan, author
St. Martin`s Press, 1992
Buku Teks
Watson, Adam, author
Routledge, 1992
Buku Teks
Lewis, William Arthur, 1915-, author
Princeton University Press, 1978
Buku Teks
Nau, Henry R., 1941-, author
SAGE Publications, 2019
Buku Teks