APA-viite (7. p.)
Gopal, M. (2008). Control systems: Principles and design (3rd ed.). Tata McGraw-Hill.
Chicago-viite (17. p.)
Gopal, M. Control Systems: Principles and Design. 3rd ed. New Delhi: Tata McGraw-Hill, 2008.
MLA-viite (9. p.)
Gopal, M. Control Systems: Principles and Design. 3rd ed. Tata McGraw-Hill, 2008.
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