Gaya APA

Kaplan, J, M., Warren, A, C. (2007). Patterns of entrepreneurship (2nd ed.). United States of America: John Wiley & Sons, Inc.

Gaya MLA

Kaplan, Jack, M.., Warren, Anthony, C.. "Patterns of entrepreneurship". 2nd ed. United States of America: John Wiley & Sons, Inc, 2007. Text.