APA-viite (7. p.)
Gray, I. (2008). The audit process: The principles, practice and cases (4th ed.). Thomson.
Chicago-viite (17. p.)
Gray, Iain. The Audit Process: The Principles, Practice and Cases. 4th ed. London: Thomson, 2008.
MLA-viite (9. p.)
Gray, Iain. The Audit Process: The Principles, Practice and Cases. 4th ed. Thomson, 2008.
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