Musselman, Vernon A.
Introduction to modern business : issues and environment
Prentice-Hall, 1977
 Buku Teks
Musselman, Vernon A.
Introduction to modern business : issues and environment
Prentice Hall of India, 1982
 Buku Teks
Rugman, Alan M.
International business : firm and environment
McGraw-Hill, 1985
 Buku Teks
Rahman, Tunku Abdul
Viewpoints
Heineman Educational Books, 1978
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Brooks, Ian
The business environment : challenges and changes
Prentice-Hall, 1997
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