APA (7th ed.) Citation

Jensen, K., Heidorn, G. E., & Richardson, S. D. (1993). Natural language processing: The PLNLP approach. Kluwer Academic.

Chicago Style (17th ed.) Citation

Jensen, Karen, George E. Heidorn, and Stephen D. Richardson. Natural Language Processing: The PLNLP Approach. Boston [etc.]: Kluwer Academic, 1993.

MLA (9th ed.) Citation

Jensen, Karen, et al. Natural Language Processing: The PLNLP Approach. Kluwer Academic, 1993.