Cita APA (7th ed.)

Bella Chip R. & Zebke Ron. (2007). Managing Knock Your Socks off Service. American Management Association.

Cita Chicago (17th ed.)

Bella Chip R. i Zebke Ron. Managing Knock Your Socks off Service. NewYork: American Management Association, 2007.

Cita MLA (9th ed.)

Bella Chip R. i Zebke Ron. Managing Knock Your Socks off Service. American Management Association, 2007.