Borden, Terry R. Technician's guide to programmable controllers / Terry R. Borden, Richard A. Cox - 6th ed. - Clifton Park, NY : Delmar, Cengage Learning, 2013 - xii, 468 p. : ill. ; 23 cm. Includes index ISBN: 9781111544096 (pbk.) 1111544093 (pbk.) Subjects--Topical Terms: Programmable controllers