Source : Dr. Robert C. Worstell, Claude C. Hopkins (2014). “Scientific Advertising - Masters of Marketing Secrets: From the First Great Copywriter”, p.25, Lulu.com
Claude C. Hopkins#Psychology Quotes #Principles Quotes #Today Quotes
Charles Duhigg
Writer
David Ogilvy
Businessman
Drayton Bird
Author
Jay Abraham
Author
John Caples
Author
John F. Kennedy
35th U.S. President
Robert Collier
Author