Incomes Data Services. (1991). Industrial relations. Institute of Personnel Management.
Citazione stile Chigago Style (17a edizione)Incomes Data Services. Industrial Relations. London: Institute of Personnel Management, 1991.
Citatione MLA (9a ed.)Incomes Data Services. Industrial Relations. Institute of Personnel Management, 1991.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.