APA (7e ed.) Bronvermelding

ProQuest (Firm) & Singh, J. (2010). Public procurement of energy efficiency services: Lessons from international experience. World Bank.

Chicago (17e ed.) Bronvermelding

ProQuest (Firm) en Jas Singh. Public Procurement of Energy Efficiency Services: Lessons from International Experience. Washington, D.C.: World Bank, 2010.

MLA (9e ed.) Bronvermelding

ProQuest (Firm) en Jas Singh. Public Procurement of Energy Efficiency Services: Lessons from International Experience. World Bank, 2010.