Citazione APA

 Sommerville, K. L. (2007).  Hospitality employee management and supervision: Concepts and practical applications.  John Wiley & Sons.

Stile di citazione Chicago

 Sommerville, Kerry L.  Hospitality Employee Management and Supervision: Concepts and Practical Applications.  John Wiley & Sons, 2007.

Citazione MLA

 Sommerville, Kerry L.  Hospitality Employee Management and Supervision: Concepts and Practical Applications.  John Wiley & Sons, 2007.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.