Shaffer, Louis Richard. <br/><br/>
The critical-path method / 
[by] L.R. Shaffer ; J.B. Ritter [and] W.L. Meyer. 
 - New York :  McGraw-Hill,  [1965] 
<br/><br/>Bibliography: p. 191-193. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Critical path analysis.