Richards, Larry E..
Business statistics: why and when /
Larry E. Richards, Jerry J. LaCava 
. - New York : McGraw-Hill Book Company,  1978 
. - xiv, 466 p.  tab., ill. schem.  24 cm. 
<br/>К.: Бібліогр. : c. 411-412 
<br/><label>  ISBN: </label>0-07-052273-1