Deletion of John Tschohl (2nd nomination)

Comment: I took a close look at the first book ''Achieving Excellence Through Customer Service'' (Prentice Hall, 1996) on a Proquest News Archive search, but found less than I expected.  A 3-sentence review in Minority Business Entrepreneur. But the other hits were articles that cited him as an expert, with a descriptor: "According to Tschohl, who is also the author of Achieving Excellence through Customer Service, if a company can get its employees to master and execute the fundamentals, it can own the customers for life."  ; "Many companies invest too much money in customer-service-oriented advertising and too little in customer-service training, says John Tschohl, president of the Service Quality Institute, in Bloomington, Minn., and author of "Achieving Excellence Through Customer Service" (Prentice Hall, $22.95). "  and more similar.  Ran a Proquest News search on his unique name,  the first 10 hits were PRNewswire press releases.  Below that it more brief quotations.  Fails 
Stance: delete
Cited policy: Wikipedia:Notability (WP:SIGCOV)