APA引文

SUN, A., LIM, E. P., & LIU, Y. (2009). What makes categories difficult to classify? Institutional Knowledge at Singapore Management University.

Chicago Style Citation

SUN, Aixin, Ee Peng LIM, and Ying LIU. What Makes Categories Difficult to Classify? Institutional Knowledge at Singapore Management University, 2009.

MLA引文

SUN, Aixin, Ee Peng LIM, and Ying LIU. What Makes Categories Difficult to Classify? Institutional Knowledge at Singapore Management University, 2009.

警告：這些引文格式不一定是100％准確.