Ong, P. S., Chia, G. L. X., & Beng, C. S. (2009). Land transport policy in Singapore: An insight into the bus service.
استشهاد بنمط شيكاغوOng, Pei Sin., Gina Lan Xian Chia, و Chew Soon Beng. Land Transport Policy in Singapore: An Insight Into the Bus Service. 2009.
MLA استشهادOng, Pei Sin., Gina Lan Xian Chia, و Chew Soon Beng. Land Transport Policy in Singapore: An Insight Into the Bus Service. 2009.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.