Cheng, C. C., Lee, S. H., Ong, M. L., & Li, M. Z. (2008). Electronic Road Pricing: A study of the effectiveness in Singapore.
استشهاد بنمط شيكاغوCheng, Chin Chin., Shing Huey Lee, Meng Lay Ong, و Michael Zhi-Feng Li. Electronic Road Pricing: A Study of the Effectiveness in Singapore. 2008.
MLA استشهادCheng, Chin Chin., Shing Huey Lee, Meng Lay Ong, و Michael Zhi-Feng Li. Electronic Road Pricing: A Study of the Effectiveness in Singapore. 2008.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.