- Author: Marcel von den Broecke (editor), Vincent J. van Heuven (editor), Wim Zonneveld (editor)
- Language: English
- Year: 1983
- Author: Wim Zonneveld (editor), Fred Weerman (editor)
- Language: English
- Year: 1980
- Author: Wim Zonneveld (editor)
- Language: English
- Year: 1978