Japan External Trade Organization : [sold by Press International], 1975
Buku Teks
White, Robert M., author
Academic Press, 1979
Buku Teks
edited by David W. Ewing
Harper & Brothers, 1958
Buku Teks
Ayres, Robert U., author
McGraw-Hill, 1969
Buku Teks
Armstrong, J. Scott, author
John Wiley & Sons, 1985
Buku Teks