APA (7th ed.) Citation

Helft, N., Inoue, K., & Poole, D. (1990). Extracting answers in circumscription.

Chicago Style (17th ed.) Citation

Helft, Nicolas, Katsumi Inoue, and David Poole. Extracting Answers in Circumscription. Tokyo, Japan, 1990.

MLA (9th ed.) Citation

Helft, Nicolas, et al. Extracting Answers in Circumscription. 1990.