APA-referens (7:e uppl.)

Estache, A., & Goicoechea, A. (2005). A "research" database on infrastructure economic performance. World Bank.

Chicago-referens (17:e uppl.)

Estache, Antonio, och Ana Goicoechea. A "Research" Database on Infrastructure Economic Performance. Washington, D.C: World Bank, 2005.

MLA-referens (9:e uppl.)

Estache, Antonio, och Ana Goicoechea. A "Research" Database on Infrastructure Economic Performance. World Bank, 2005.