APA
                    Bessam Abdulrazak S. G. B. B. H. P. M. M., . (2011). Toward Useful Services for Elderly and People with Disabilities. Germany: Springer.
                
                    Chicago
                    Bessam Abdulrazak Sylvain Giroux Bruno Bouchard Hélène Pigot Mounir Mokhtari, . 2011. Toward Useful Services for Elderly and People with Disabilities. Germany: Springer.
                
                    Harvard
                    Bessam Abdulrazak S. G. B. B. H. P. M. M., . (2011). Toward Useful Services for Elderly and People with Disabilities. Germany: Springer.
                
                    MLA
                    Bessam Abdulrazak Sylvain Giroux Bruno Bouchard Hélène Pigot Mounir Mokhtari, . Toward Useful Services for Elderly and People with Disabilities. Germany: Springer. 2011.