Halvey, J. K. M. (2005). Information Technology Outsourcing Transactions (2nd.). John Wiley &Sons.
Lua i Stíl Chicago (17ú heag.)Halvey, John K.; Melby. Information Technology Outsourcing Transactions. 2nd. New jersey: John Wiley &Sons, 2005.
Lua MLA (9ú heag.)Halvey, John K.; Melby. Information Technology Outsourcing Transactions. 2nd. John Wiley &Sons, 2005.
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