- Relationship Marketing Fundamentals: Two Dimensional Perspective of Customer Relationship Management
- Fondamenti di marketing relazionale: Perspectiva Bidimensionale sulla gestione delle relazioni con i clienti (CRM)
- Grundlagen des Beziehungs-Marketings: Perspectiva Bidimensional do Kundenbeziehungsmanagement (CRM)
- Principes du marketing relationnel: Perspectiva bidimensionnel do Gestion de la relation client (CRM)
- Cocriação de Valor no Relacionamento Empresa e Cliente