Harvard University Press · iUniverse
| title | ISBN-13 | year of publication |
|---|---|---|
| Frege and Godel: Two Fundamental Texts in Mathematical Logic | 978-0-674-31844-1 | 1970 |
| Frege and Gödel: Two Fundamental Texts in Mathematical Logic | 978-1-58348-596-5 | 1999 |
| From Frege to Godel: A Source Book in Mathematical Logic, 1879-1931 | 978-0-674-32449-7 | 2002 |
| From Frege to Gödel: A Source Book in Mathematical Logic, 1879-1931 | 978-1-58348-597-2 | 1999 |
| With Trotsky in Exile: From Prinkipo to Coyoacan | 978-0-674-80255-1 | 1978 |