| Year | 1952 |
| Date | 10-Apr |
| Volume | 106 |
| Issue | 2,655 |
| Page | 476 |
| Category | Internal Combustion |
| Part | |
| Title | Balancing Small Engines. Notes on principles and practical methods |
| Author | Edgar T.Westbury |
| Notes | Three-cylinder engines, four or more cylinders, primary and secondary balance |