APA (7th ed.) Zitazioa
Gwilliam, K. M., & Bofinger, H. (2011). Africa's transport infrastructure: Mainstreaming maintenance and management. World Bank.
Chicago Style (17th ed.) Zitazioa
Gwilliam, K. M., eta Heinrich Bofinger. Africa's Transport Infrastructure: Mainstreaming Maintenance and Management. Washington, D.C.: World Bank, 2011.
MLA (9th ed.) Zitazioa
Gwilliam, K. M., eta Heinrich Bofinger. Africa's Transport Infrastructure: Mainstreaming Maintenance and Management. World Bank, 2011.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.