Cita APA (7th ed.)

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..

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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