APA引文

Chang, Y., Putra, N. A., & Studies, S. R. S. o. I. (2009). Energy security in Singapore: Challenges and opportunities.

Chicago Style Citation

Chang, Youngho, Nur Azha Putra, and S. Rajaratnam School of International Studies. Energy Security in Singapore: Challenges and Opportunities. 2009.

MLA引文

Chang, Youngho, Nur Azha Putra, and S. Rajaratnam School of International Studies. Energy Security in Singapore: Challenges and Opportunities. 2009.

警告：這些引文格式不一定是100％准確.