Clark, Rodney, author
Yale University Press, 1979
Buku Teks
edited by Masahiko Aoki and Ronald Dore
Oxford University Press, 1994
Buku Teks
Malvino, Albert Paul, author
Tata McGraw-Hill, 1983
Buku Teks
Hood, John Linsley
BH Newnes, 1995
Buku Teks
Robinson, E. A. G., author
James Nisbet and Co.Ltd., 1958
Buku Teks