APA (7th ed.) Zitazioa
Forster, L. The Penguin Book of German Verse. Penguin Books.
Chicago Style (17th ed.) Zitazioa
Forster, Leonard. The Penguin Book of German Verse. Middlesex, Inglaterra: Penguin Books.
MLA (9th ed.) Zitazioa
Forster, Leonard. The Penguin Book of German Verse. Penguin Books.
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