Adding Value as a Professional Technical Communicator
http://www.ingentaconnect.com/content/stc/tc/1995/00000042/00000001/art00003
  access restricted (by the publisher) to members/subscribers/customers only
  peer-reviewed

Redish, Janice C. 'Ginny'
Technical Communication Online
1995

Abstract:

Value added means generating greater return on investment than the cost of the initial investment.