Jeffery, M. (2010). Data - Driven Marketing: 15 metrics Everyone in marketing should know. John Wiley.
Παραπομπή Chicago StyleJeffery, Mark. Data - Driven Marketing: 15 Metrics Everyone in Marketing Should Know. John Wiley, 2010.
Παραπομπή MLAJeffery, Mark. Data - Driven Marketing: 15 Metrics Everyone in Marketing Should Know. John Wiley, 2010.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.