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Information Technology Auditing and Assurance. (2007). Jakarta: Salemba Empat.

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Information Technology Auditing and Assurance. . Jakarta: Salemba Empat, 2007. Text.

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Information Technology Auditing and Assurance. . Jakarta: Salemba Empat, 2007. Text.

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Information Technology Auditing and Assurance. Jakarta: Salemba Empat, 2007. Print.