Gar, J. (1998). System Analysis. Prentice Hall of India.
Cita Chicago (17th ed.)Gar, J. System Analysis. New Delhi: Prentice Hall of India, 1998.
Cita MLA (9th ed.)Gar, J. System Analysis. Prentice Hall of India, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.