Cita APA (7a ed.)

Koenig, H. E., & Blackwell, W. A. (1961). Electromechanical system theory. McGraw-Hill.

Cita Chicago Style (17a ed.)

Koenig, Hernan E., y William A. Blackwell. Electromechanical System Theory. New York: McGraw-Hill, 1961.

Cita MLA (8a ed.)

Koenig, Hernan E., y William A. Blackwell. Electromechanical System Theory. McGraw-Hill, 1961.