Citazione Stile APA (7a Edizione)
Greenberg, P. CRM at the Speed of Light, Third Edition: Essential Customer Strategies for the 21st Century (3a edición.). McGraw-Hill.
Citazione stile Chigago Style (17a edizione)
Greenberg, Paul. CRM at the Speed of Light, Third Edition: Essential Customer Strategies for the 21st Century. 3a edición. Emeryville, EUA: McGraw-Hill.
Citatione MLA (9a ed.)
Greenberg, Paul. CRM at the Speed of Light, Third Edition: Essential Customer Strategies for the 21st Century. 3a edición. McGraw-Hill.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.