Cita APA (7a ed.)

Phillips, C. L., & Harbor, R. D. (1991). Feedback control systems (2nd ed.). Prentice-Hall.

Cita Chicago Style (17a ed.)

Phillips, Charles L., y Royce D. Harbor. Feedback Control Systems. 2nd ed. Englewood Cliffs, New Jersey: Prentice-Hall, 1991.

Cita MLA (9a ed.)

Phillips, Charles L., y Royce D. Harbor. Feedback Control Systems. 2nd ed. Prentice-Hall, 1991.