Ibrahim, N. H. (2006). Variation orders in Universiti Teknologi Malaysia (UTM) construction projects.
芝加哥风格引文Ibrahim, Nor Hayati. Variation Orders in Universiti Teknologi Malaysia (UTM) Construction Projects. 2006.
MLA引文Ibrahim, Nor Hayati. Variation Orders in Universiti Teknologi Malaysia (UTM) Construction Projects. 2006.
警告：这些引文格式不一定是100％准确.