APA-referens (7:e uppl.)

Ginsburgh, V., & Weber, S. (2011). How many languages do we need?: The economics of linguistic diversity. Princeton Univ. Press.

Chicago-referens (17:e uppl.)

Ginsburgh, Victor, och Shlomo Weber. How Many Languages Do We Need?: The Economics of Linguistic Diversity. Princeton, NJ [u.a.]: Princeton Univ. Press, 2011.

MLA-referens (8:e uppl.)

Ginsburgh, Victor, och Shlomo Weber. How Many Languages Do We Need?: The Economics of Linguistic Diversity. Princeton Univ. Press, 2011.