Lua APA (7ú heag.)
Helpman, E. (2011). Understanding global trade. Belknap Press of Harvard University Press.
Lua i Stíl Chicago (17ú heag.)
Helpman, Elhanan. Understanding Global Trade. Cambridge, Mass.: Belknap Press of Harvard University Press, 2011.
Lua MLA (9ú heag.)
Helpman, Elhanan. Understanding Global Trade. Belknap Press of Harvard University Press, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.