@book{2409,
	author = {PEARCE II, J .A . and ROBINSON, JR,  R .B .},
	title = {Formulation, Implementation ,and  Control of Competitive Strategy                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  },
	publisher = {Irwin,},
	year = {1991.},
	address = {Boston,},
	edition = {4th  Ed.}
}