Regional encyclopedia of business and management : management in the Americas
edited by Malcolm Warner
Business Press, 2000
 Buku Referensi
Regional encyclopedia of business and management : management in Asia Pacific
edited by Malcolm Warner
Business Press, 2000
 Buku Referensi
Regional encyclopedia of business and management : management in emerging countries
edited by Malcolm Warner
Business Press, 2000
 Buku Referensi
Harvie, Christopher T
The rise of regional Europe
0, 1994
 Buku Teks
World geographical encyclopedia 4: Europe
edited by Sybil P. Parker
McGraw-HIll, 1995
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