Johnston, R., & Johnston, R. (2001). Service operations managementRobert Johnston, Graham Clark. Prentice Hall.
Chicago Style (17th ed.) CitationJohnston, Robert, i Robert Johnston. Service Operations ManagementRobert Johnston, Graham Clark. Prentice Hall, 2001.
Cita MLAJohnston, Robert, i Robert Johnston. Service Operations ManagementRobert Johnston, Graham Clark. Prentice Hall, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.