Levinson, Jay Conrad. <br/><br/>
The Ninety-minute hour / 
Jay Conrad Levinson. 
 - New York :  Plume,  1991. 
 - 211 p. ;  21 cm. 
<br/><br/> Reprint. Originally published : New York : Dutton, 1990. 
<br/><br/>Includes bibliographical references (p. 197-200). 
<br/><br/><label>ISBN: </label>0452265967 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Time management.