Walter, Ingo
International economics
John Wiley & Sons, 1981
Buku Teks
Salvatore, Dominick
International economics
Prentice-Hall, 1995
Buku Teks
Salvatore, Dominick
International economics
John Wiley & Sons, 2007
Buku Teks
Appleyard, Dennis R.
International economics
Irwin , 1995
Buku Teks
Salvatore, Dominick
International economics
Prentice-Hall, 1998
Buku Teks