APA-viite (7. p.)

Havinga, A., & Langer, N. (2015). Invisible languages in the nineteenth century. Peter Lang.

Chicago-viite (17. p.)

Havinga, Anna, ja Nils Langer. Invisible Languages in the Nineteenth Century. Oxford, [England]: Peter Lang, 2015.

MLA-viite (9. p.)

Havinga, Anna, ja Nils Langer. Invisible Languages in the Nineteenth Century. Peter Lang, 2015.