The environment and international relations
edited by John Vogler and Mark F. Imber
Routledge , 1996
 Buku Teks SO
Rugman, Alan M.
International business : firm and environment
McGraw-Hill , 1985
 Buku Teks
Vernon, Raymond
Economic environment of international business
Prentice-Hall, 1981
 Buku Teks
Rugman, Alan M.
International business : firm and environment
McGraw-Hill, 1985
 Buku Teks
Cundiff, Edward W.
Marketing in the international environment
Prentice-Hall, 1988
 Buku Teks SO