@incollection{,
	
					
					
					9807CC426225B8660AFC2CF43C8458E3
				,
	author={{IbrahimBedane} and {Mahmud AbdurahmenMohammed} and {Madda Walabu University}},
	journal={{Global Journal of Researches in Engineering}},
	journal={{GJRE}}2249-45960975-586110.34257/gjre,
	address={Cambridge, United States},
	publisher={Global Journals Organisation}211710
}

@incollection{b0,
	
	
		,
	title={{Statistical Quality Control}}
	
	
		,
	journal={{Jeya Chandra}}
		
			,
	year={2001}
			,
	publisher={CRC Press LLC}
		
	

}

@book{b1,
	
	
		,
	title={{}}
		,
	author={{
			ThomasPyzdek
		}}
		
			,
	year={2003}
		
	
	,
	note={Quality Engineering Handbook. Second Edition}

}

@book{b2,
	
	
		,
	title={{}}
		,
	author={{
			MarcelDekker
		} and {
			Inc
		} and {
			Newyork
		} and {
			Basel
		}}
		
		
		
		
	

}

@book{b3,
	
	
		,
	title={{Introduction to Statistical Quality Control}}
		,
	author={{
			DouglasCMontgomery
		}}
		
			,
	publisher={John Wiley & Sons, Inc}
		
		
			Arizona State University
		
	
	,
	note={Sixth Edition}

}