edited by George K. Zollschan and Walter Hirsch
Halsted Press, 1976
Buku Teks
Kunkel, John H.
Oxford University Press, 1970
Buku Teks
Wallerstein, Immanuel, author
John Wiley , 1966
Buku Teks
Yoshimichi Sato, author
Trans Pacific Press, 2006
Buku Teks
Halpern, Manfred, author
Princeton University Press, 1963
Buku Teks