APA (7th ed.) Citation

Hughes, T. A. (2001). Programmable controllers (3rd ed.). ISA.

Chicago Style (17th ed.) Citation

Hughes, Thomas A. Programmable Controllers. 3rd ed. Research Triangle Park, NC: ISA, 2001.

MLA (8th ed.) Citation

Hughes, Thomas A. Programmable Controllers. 3rd ed. ISA, 2001.

Warning: These citations may not always be 100% accurate.