| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The Magic Of Opera | 978-0-306-80251-5 (0-306-80251-1) | 1985 |
| The Magic of Opera | 978-0-06-012419-9 (0-06-012419-9) | 1973 |
| The magic of opera | 978-0-06-043715-2 (0-06-043715-4) | 1972 |
J.K · J. Knapp · J.M. · John Merrill Knapp · M. K. · M. Knapp