The Final Why
http://elephant.org.il/the_why_of_style/the_final_why.html

Levinson, Mark L.
Elephant
2008

Abstract:

It's not a question of knowing. It’s more a question of feeling, when you read it, that the material was written at a company where professionalism governs everything. If you see writing that looks professional, then you believe that the coding — which you can’t see — is also professional.