George Stalk

Libri
Hardball Hardball
Hardball
2004
Five Future Strategies You Need Right Now Five Future Strategies You Need Right Now
Five Future Strategies You Need Right Now
2008

Audiolibri
Hardball : Are You Playing to Play or Playing to Win? Hardball : Are You Playing to Play or Playing to Win?
Hardball : Are You Playing to Play or Playing to Win?
2025