“Gerhard Gschwandtner, Great Thoughts to Sell By: Quotes to Motivate You to Success, McGraw-Hill Professional, 2007, ISBN 0071475990, p. 89.”
- #wikiquote
- #saying
- #lang:en
- #lang:pt
- #multi-edition
“Gerhard Gschwandtner, Great Thoughts to Sell By: Quotes to Motivate You to Success, McGraw-Hill Professional, 2007, ISBN 0071475990, p. 89.”
Captured 2026-08-17 from Wikiquote (en). The archived copy is preserved so this citation survives link rot.