- Bridge Bidding Standard American
- The Precision Bidding in Bridge,: Wei, C.: 9780486211718: Amazon.com:
- Complete bridge
- Systems - ClaireBridge
- Contract Bridge: Fourth-Bid | Bridge World
- On the Structure of Bidding - Claire Bridge
- Bridge - The Bidding System Freeware Download Game
- Play Bridge: system - Trail Daily Times
- Charles legacy
- 2 Over 1” Bidding – Three Lessons – ATeacherFirst
- Contract Bridge - SUBJECT INDEX Part
- What is the best bidding system Bridge? Why? - Quora
- Vintage Culbertson System Booklet Bidding Card, c. 1950 |
- - Wikipedia
- Charles legacy
- The Expert American Bidding System by Chris Hasney & Jerry Pottier :
- Advanced Two Over One Conventions Couchman, Test Prep Tutor
- The Precision Diamond Bridge Bidding System (2nd Edition- 2020) Barclay Supply
- Vintage Culbertson System Booklet Bidding Card, c. 1950 |
- Bridge | Rules, Types, Strategy, & Facts | Britannica
- How Many Bridge Conventions Do I Really Need to Know? Iowa City Bridge
- Barnes and Noble The Barton System: Advanced Bidding System The Summit