APA Citation

Hughes, T. A., & Hughes, T. A. (2005). Programmable controllers (4. edition.). United States: ISA.

Chicago Style Citation

Hughes, Thomas A., and Thomas A. Hughes. Programmable Controllers. 4. edition. United States: ISA, 2005.

MLA Citation

Hughes, Thomas A., and Thomas A. Hughes. Programmable Controllers. 4. edition. United States: ISA, 2005.

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