@book{8808,
	author = {Helms, Marilyn M. and Chase, Richard B.},
	title = {Study guide for use with Production and operations management, manufacturing and services, 8th edition, [by] Richard B. Chase, Nicholas J. Aquilano, F. Robert Jacobs /},
	publisher = {Irwin/McGraw-Hill,},
	year = {c1998.},
	address = {Boston, Mass. :}
}