Forster, A., & Epstein, B. R. (1956). Cross-currents: By Arnold Forster and Benjamin R. Epstein. Doubleday & Co..
Lua i Stíl Chicago (17ú heag.)Forster, Arnold, agus Benjamin R. Epstein. Cross-currents: By Arnold Forster and Benjamin R. Epstein. Garden City, NY: Doubleday & Co., 1956.
Lua MLA (8ú heag.)Forster, Arnold, agus Benjamin R. Epstein. Cross-currents: By Arnold Forster and Benjamin R. Epstein. Doubleday & Co., 1956.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.