Antzeko izenburuak: Black Book - Restaurant Industry Trends (July 1978)
- Black Book - Restaurant Industry Trends (July 1977)
- Black Book - Restaurant Industry Trends (July 1980)
- Black Book - Restaurant Industry Trends (July 1981)
- Black Book - Restaurant Industry Trends (November 1978)
- Black Book - Restaurant Industry Trends (May 1978)
- Black Book - Restaurant Industry Trends (January 1978)