APA
Vinturella J. B., . (1999). The entrepreneur's fieldbook. New Jersey: Prentice-Hall, Inc.
Chicago
Vinturella John B, . 1999. The entrepreneur's fieldbook. New Jersey: Prentice-Hall, Inc.
Harvard
Vinturella J. B., . (1999). The entrepreneur's fieldbook. New Jersey: Prentice-Hall, Inc.
MLA
Vinturella John B, . The entrepreneur's fieldbook. New Jersey: Prentice-Hall, Inc. 1999.