Citazione Stile APA (7a Edizione)
O'Sullivan, L. (2010). Client service excellence: The 10 commandments. Knowres Publishing.
Citazione stile Chigago Style (17a edizione)
O'Sullivan, Larry. Client Service Excellence: The 10 Commandments. Randburg, Republic of South Africa: Knowres Publishing, 2010.
Citatione MLA (9a ed.)
O'Sullivan, Larry. Client Service Excellence: The 10 Commandments. Knowres Publishing, 2010.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.