Harrison, N <br/><br/>
How to Design Self Directed and Distance : A Guide for Creators of Web-Based Training,Computer-Based Training,and Self-Study Meterials 

 -  McGraw Hill: USA  1999 
 - 360 p. 
<br/><br/><label>ISBN: </label>0000070271003 
<br/><br/><label>Dewey Class. No.: </label>371.35  / H16