Krause, Lawrence B., author
Prentice-Hall, 1964
Buku Teks
edited by Denton E. Morrison and Ramon E. Henkel
Aldine, 1973
Buku Teks
Aronson, Robert L.
Commerce Clearing House,Inc., 1957
Buku Teks
Vogel, Ezra F., author
Tian Xia Wen Hua, 1989
Buku Teks
World Bank, 1974
Buku Teks