Castro, P. P. M. (1990). Calibration of the sysops computer model. Philippine Engineering Journal.
Citación estilo ChicagoCastro, Peter Paul M. "Calibration of the Sysops Computer Model." Philippine Engineering Journal 1990.
Cita MLACastro, Peter Paul M. "Calibration of the Sysops Computer Model." Philippine Engineering Journal, 1990.
Warning: These citations may not always be 100% accurate.