APA (7th ed.) Citation

Kumar, K., Chen, J., Friesen, D. K., & Hartfiel, D. (1993). Combinatorial aspects of point visibility.

Chicago Style (17th ed.) Citation

Kumar, Krishna, Jianer Chen, Donald K. Friesen, and Darald Hartfiel. Combinatorial Aspects of Point Visibility. 1993.

MLA (9th ed.) Citation

Kumar, Krishna, et al. Combinatorial Aspects of Point Visibility. 1993.