Payne, Mark
Financial Times Business Information, 1994
Buku Teks
Emmerson, John K., author
Charles E. Tuttle Company, 1976
Buku Teks
Cirovic, Michael M
Reston Publishing Company, 1979
Buku Teks
Chute, George M., author
McGraw-Hill, 1981
Buku Teks
edited by Kimura Ki ; translated and adapted by Philip Yampolsky
Obunsha, 1957
Buku Teks