Parr, E. A. (2003). Programmable controllers: An engineer's guide (3rd ed.). Newnes.
Chicago Style (17th ed.) CitationParr, E. A. Programmable Controllers: An Engineer's Guide. 3rd ed. Oxford Burlington, MA: Newnes, 2003.
MLA (8th ed.) CitationParr, E. A. Programmable Controllers: An Engineer's Guide. 3rd ed. Newnes, 2003.
Warning: These citations may not always be 100% accurate.