APA引文

Ullmann, J. R. (1973). Pattern recognition techniques. Butterworths.

Chicago Edition Citation

Ullmann, J R. Pattern Recognition Techniques. London: Butterworths, 1973.

MLA引文

Ullmann, J R. Pattern Recognition Techniques. Butterworths, 1973.

警告：這些引文格式不一定是100％准確.