Cita APA (7a ed.)

Phillips, C. L., & Harbor, R. D. (1988). Feedback control systems. Prentice-Hall International.

Cita Chicago Style (17a ed.)

Phillips, Charles L., y Royce D. Harbor. Feedback Control Systems. Englewood Cliffs, NJ: Prentice-Hall International, 1988.

Cita MLA (9a ed.)

Phillips, Charles L., y Royce D. Harbor. Feedback Control Systems. Prentice-Hall International, 1988.