| title | ISBN-13 | year of publication |
|---|---|---|
| Introduction to Descriptive Statistics and Correlation | 978-0-07-044820-9 | 1965 |
| Introduction to statistical analysis: A semiprogrammed approach | 978-0-07-044804-9 | 1974 |
| Introduction to statistical analysis: A semiprogrammed approach | 978-0-07-044805-6 | 1974 |
| Statistical Concepts: a Program for Self-Instruction | 978-0-07-044852-0 | 1963 |
| Statistical Concepts: A Program for Self-Instruction | 978-0-07-044854-4 | 1963 |