APA (7th ed.) Citation

Weerawarana, S., Houstis, E. N., Rice, J. R., Joshi, A., & Houstis, C. E. PYTHIA: A knowledge-based system to select scientific algorithms. ACM transactions on mathematical software..

Chicago Style (17th ed.) Citation

Weerawarana, Sanjiva, Elias N. Houstis, John R. Rice, Anupam Joshi, and Catherine E. Houstis. "PYTHIA: A Knowledge-based System to Select Scientific Algorithms." ACM Transactions on Mathematical Software. .

MLA (9th ed.) Citation

Weerawarana, Sanjiva, et al. "PYTHIA: A Knowledge-based System to Select Scientific Algorithms." ACM Transactions on Mathematical Software., .