Halloran, J. W. (1990). Why entrepreneurs fail: Avoid the 20 fatal pitfalls of running your business. Liberty Hall.
Chicago-čujuhus (17. p.)Halloran, James W. Why Entrepreneurs Fail: Avoid the 20 Fatal Pitfalls of Running Your Business. New York: Liberty Hall, 1990.
MLA-čujuhus (9. p.)Halloran, James W. Why Entrepreneurs Fail: Avoid the 20 Fatal Pitfalls of Running Your Business. Liberty Hall, 1990.
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