World Bank. (1999). Selection of consultants: Including standard and sample contracts for consultants services: complex time-based assignments, consultants services: lump-sum remuneration and small assignments: time-based payments, small asssignments: lump-sum payments. Washington: World Bank.
Παραπομπή Chicago StyleWorld Bank. Selection of Consultants: Including Standard and Sample Contracts for Consultants Services: Complex Time-based Assignments, Consultants Services: Lump-sum Remuneration and Small Assignments: Time-based Payments, Small Asssignments: Lump-sum Payments. Washington: World Bank, 1999.
Παραπομπή MLAWorld Bank. Selection of Consultants: Including Standard and Sample Contracts for Consultants Services: Complex Time-based Assignments, Consultants Services: Lump-sum Remuneration and Small Assignments: Time-based Payments, Small Asssignments: Lump-sum Payments. Washington: World Bank, 1999.