Bremmer, R. H. (2009). An introduction to Old Frisian: History, grammar, reader, glossary. John Benjamins Pub. Co..
Lua i Stíl Chicago (17ú heag.)Bremmer, Rolf H. An Introduction to Old Frisian: History, Grammar, Reader, Glossary. Amsterdam ; Philadelphia: John Benjamins Pub. Co., 2009.
Lua MLA (9ú heag.)Bremmer, Rolf H. An Introduction to Old Frisian: History, Grammar, Reader, Glossary. John Benjamins Pub. Co., 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.