- Author: C. Northcote Parkinson
- Language: English
- Year: 1956
La ley de Parkinson
epub
- Author: Cyril Northcote Parkinson
- Language: Spanish
- Year: 1957
La ley de Parkinson
epub
- Author: Cyril Northcote Parkinson
- Language: Spanish
- Year: 1957
- Author: Cyril Northcote Parkinson
- Language: English
- Year: 1957
- Author: Cyril Northcote Parkinson
- Language: English
- Year: 1957
- Author: C. Northcote Parkinson
- Language: English
- Year: 2001