APA (7th ed.) Citation

Hayes-Roth, B. (1998). Character-based interactive story systems. IEEE Intelligent Systems & Their Applications, 13(6), 12.

Chicago Style (17th ed.) Citation

Hayes-Roth, Barbara. "Character-based Interactive Story Systems." IEEE Intelligent Systems & Their Applications 13, no. 6 (1998): 12.

MLA (9th ed.) Citation

Hayes-Roth, Barbara. "Character-based Interactive Story Systems." IEEE Intelligent Systems & Their Applications, vol. 13, no. 6, 1998, p. 12.