Goldman, L. (1981). English Synonyms and How to Use Them. Verlag Enzyklopädie.
Lua i Stíl Chicago (17ú heag.)Goldman, Leonhard. English Synonyms and How to Use Them. Leipzig: Verlag Enzyklopädie, 1981.
Lua MLA (8ú heag.)Goldman, Leonhard. English Synonyms and How to Use Them. Verlag Enzyklopädie, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.