Sutcliffe, K. E. (1964). Fahrt ins Blaue: A German course for schools (2nd ed.). Bell.
Lua i Stíl Chicago (17ú heag.)Sutcliffe, Kenneth Edward. Fahrt Ins Blaue: A German Course for Schools. 2nd ed. Lond.: Bell, 1964.
Lua MLA (8ú heag.)Sutcliffe, Kenneth Edward. Fahrt Ins Blaue: A German Course for Schools. 2nd ed. Bell, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.