Bearden, James H.
The environment of business : perspectives and viewpoints
Holt, Rinehart and Winston , 1969
 Buku Teks
Jucius, Michael J.
Introduction to business
Richard D. Irwin, 1961
 Buku Teks
Hastings, Paul G.
Introduction to business
McGraw-Hill, 1974
 Buku Teks
Musselman, Vernon A.
Introduction to modern business : issues and environment
Prentice Hall of India, 1982
 Buku Teks
Diamond, Jay
Introduction to tcontemporary business / Jay Diamond
Prentice-Hall, 1975
 Buku Teks