Stockton, John R., author
South Western, 1966
Buku Teks
Wilson, Graham K., author
Chatham House, 1985
Buku Teks
Horowitz, Ira, author
McGraw-Hill Kogakusha, 1972
Buku Teks
Ball, Donald A., author
Business Publications, 1985
Buku Teks
Horowitz, Ira, author
McGraw-Hill, 1965
Buku Teks