- The Mystical Path of Christian Theosis : Practical Exercises for Experiencing Christian Purification, Illumination and Glorification
- E-Business: Przewodnik po tworzeniu strategii e-biznesowej (Polish Edition)
- E-Business: Ein Leitfaden zur Formulierung einer E-Business-Strategie (German Edition)
- E-Business: Um guia para a formulação de estratégias de e-business (Portuguese Edition)
- E-Business: Una guida alla formulazione di strategie di e-business (Italian Edition)








