Παραπομπή σε μορφή APA (7η εκδ.)

Hammer, J. S., & Jack, W. (2001). The design of incentives for health care providers in developing countries: Contracts, competition, and cost control. World Bank.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Hammer, Jeffrey S., και William Jack. The Design of Incentives for Health Care Providers in Developing Countries: Contracts, Competition, and Cost Control. Washington, D.C: World Bank, 2001.

Παραπομπή σε μορφή MLA (9th εκδ.)

Hammer, Jeffrey S., και William Jack. The Design of Incentives for Health Care Providers in Developing Countries: Contracts, Competition, and Cost Control. World Bank, 2001.