Block, P. (2000). Peter block flawless consulting: A guide to getting your expertise used. San Francisco: Jossey-Bass/Pfeiffer.
Παραπομπή Chicago StyleBlock, Peter. Peter Block Flawless Consulting: A Guide to Getting Your Expertise Used. San Francisco: Jossey-Bass/Pfeiffer, 2000.
Παραπομπή MLABlock, Peter. Peter Block Flawless Consulting: A Guide to Getting Your Expertise Used. San Francisco: Jossey-Bass/Pfeiffer, 2000.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.