APA (7e ed.) Bronvermelding
O'Sullivan, L. (2010). Client service excellence: The 10 commandments. Knowres Publishing.
Chicago (17e ed.) Bronvermelding
O'Sullivan, Larry. Client Service Excellence: The 10 Commandments. Randburg, Republic of South Africa: Knowres Publishing, 2010.
MLA (9e ed.) Bronvermelding
O'Sullivan, Larry. Client Service Excellence: The 10 Commandments. Knowres Publishing, 2010.
Let op: Deze citaties zijn niet altijd 100% accuraat.