Troike, Rudolph C. Bibliography of Bibliographies of the Languages of the World. Vol. 1, General and Indo-European languages of Europe. Amsterdam: John Benjamins Publishing Company, 1990.

Troike, Rudolph C. Bibliography of Bibliographies of the Languages of the World. Vol. 1, General and Indo-European languages of Europe. Amsterdam: John Benjamins Publishing Company, 1990.