@book{11987,
	author = {Petruzella, Frank D.},
	title = {Activities manual for Programmable logic controllers, second edition /},
	publisher = { Glencoe/McGraw-Hill,},
	year = { 1998},
	address = {New York:},
	note = {May be used with Frank D. Petruzella's Programmable logic controllers, 3rd ed. (TK787.P76 P47 2005)}
}