Littlejohns, R. Crossing a threshold: The example of German romanticism / Richard Littlejohns. Schwellen : germanistische Erkundungen einer Metapher.(1999).
Citazione stile Chigago Style (17a edizione)Littlejohns, Richard. "Crossing a Threshold: The Example of German Romanticism / Richard Littlejohns." Schwellen : Germanistische Erkundungen Einer Metapher.(1999) .
Citatione MLA (8a ed.)Littlejohns, Richard. "Crossing a Threshold: The Example of German Romanticism / Richard Littlejohns." Schwellen : Germanistische Erkundungen Einer Metapher.(1999), .
Attenzione: Queste citazioni potrebbero non essere precise al 100%.