Surbana Urban Planning Group. National concept plans regional structural plans. Surbana International Consultants Pte Ltd.
芝加哥风格引文Surbana Urban Planning Group. National Concept Plans Regional Structural Plans. Singapore: Surbana International Consultants Pte Ltd.
MLA引文Surbana Urban Planning Group. National Concept Plans Regional Structural Plans. Surbana International Consultants Pte Ltd.
警告：这些引文格式不一定是100％准确.