Ali, 2. A. Z. (2008). Causes and steps to minimize variations in construction projects [electronic resource]. Skudai : Universiti Teknologi Malaysia.
Chicago-viite (17. p.)Ali, 267390 Ahmad Zaki. Causes and Steps to Minimize Variations in Construction Projects [electronic Resource]. Skudai : Universiti Teknologi Malaysia, 2008.
MLA-viite (9. p.)Ali, 267390 Ahmad Zaki. Causes and Steps to Minimize Variations in Construction Projects [electronic Resource]. Skudai : Universiti Teknologi Malaysia, 2008.
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