| Carnap, Rudolf, 1891-1970 |
| Introduction to symbolic logic and its applications / by Rudolf Carnap ; translated by William H. Meyer and John Wilkinson |
| New York : Dover, c1958. |
| Ellul, Jacques. |
| The technological order / Jacques Ellul ; translated by John Wilkinson |
| In: Encyclopaedia Britannica conference on technological order held at the Center in Santa Barbara, California, March 11-16, 1962. p. 394-421 |