Frey, H. Intertextuality in Celan's poetry: "Zwölf Jahre" and "Auf Reisen" / Hans-Jost Frey. Word traces : readings of Paul Celan.(1994).
Chicago-viite (17. p.)Frey, Hans-Jost. "Intertextuality in Celan's Poetry: "Zwölf Jahre" and "Auf Reisen" / Hans-Jost Frey." Word Traces : Readings of Paul Celan.(1994) .
MLA-viite (8. p.)Frey, Hans-Jost. "Intertextuality in Celan's Poetry: "Zwölf Jahre" and "Auf Reisen" / Hans-Jost Frey." Word Traces : Readings of Paul Celan.(1994), .
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