| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Practical Ventriloquism - Being a Thoroughly Reliable Guide to the Art of Voice Throwing and Vocal Mimicry by an Entirely Novel System of Graded Exercises | 978-1-4O67-96O3-2 (1-4O67-96O3-4) | 2014 |
Robert G. · Roberto Gandini · Roberto Giuntini · Roberto Guintini