Cita APA (7th ed.)

Nagrath, I. J., & Gopal, M. (1981). Control systems engineering (2a. ed.). Wiley Eastern.

Cita Chicago (17th ed.)

Nagrath, I. J., i M. Gopal. Control Systems Engineering. 2a. ed. Nueva Delhi: Wiley Eastern, 1981.

Cita MLA (9th ed.)

Nagrath, I. J., i M. Gopal. Control Systems Engineering. 2a. ed. Wiley Eastern, 1981.