APA引文

Zhu, Y. (2001). Facial expression recognition using hidden markov model.

Chicago Style (17th ed.) Citation

Zhu, Yi. Facial Expression Recognition Using Hidden Markov Model. 2001.

MLA引文

Zhu, Yi. Facial Expression Recognition Using Hidden Markov Model. 2001.

警告：这些引文格式不一定是100％准确.