APA引文

Khoo, B. L., Loo, W. L., Ong, C. P., & Yunhua, L. (2013). Land transport in Singapore.

Chicago Style Citation

Khoo, Boo Leong., Wen Lieh Loo, Chee Peng Ong, and Liu Yunhua. Land Transport in Singapore. 2013.

MLA引文

Khoo, Boo Leong., Wen Lieh Loo, Chee Peng Ong, and Liu Yunhua. Land Transport in Singapore. 2013.

警告：這些引文格式不一定是100％准確.