Schueler, H. J. (1967). The German verse epic in the nineteenth and twentieth centuries. Martinus Nijhoff.
Chicago-viite (17. p.)Schueler, Heinz Juergen. The German Verse Epic in the Nineteenth and Twentieth Centuries. The Hague: Martinus Nijhoff, 1967.
MLA-viite (9. p.)Schueler, Heinz Juergen. The German Verse Epic in the Nineteenth and Twentieth Centuries. Martinus Nijhoff, 1967.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.