Cita APA (7a ed.)

Sherman, P. D., & Martin, J. C. (1990). An OPS5 primer: Introduction to rule-based expert systems. Prentice Hall.

Cita Chicago Style (17a ed.)

Sherman, Porter D., y John C. Martin. An OPS5 Primer: Introduction to Rule-based Expert Systems. Englewood Cliffs: Prentice Hall, 1990.

Cita MLA (9a ed.)

Sherman, Porter D., y John C. Martin. An OPS5 Primer: Introduction to Rule-based Expert Systems. Prentice Hall, 1990.