| title | ISBN-13 (ISBN-10)  | year of publication | 
|---|---|---|
| Mathematical Logic with Special Reference to the Natural Numbers | 978-0-521-09058-2 (0-521-09058-X)  | 2009 | 
| Mathematical Logic. With special Reference to the Natural Numbers. | 978-0-521-08053-8 (0-521-08053-3)  | 1972 |