| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1984 | 978-0-920219-00-3 | Chuck Chakrapani | Silver: A Guide to Investment Profits: Including the Unique Silver Spinner System |
| 2018 | 978-0-920219-52-2 | Chuck Chakrapani | Analytics for Customer Insights: A Non-Technical Introduction |