Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.