APA (7 वां संस्करण) प्रशस्ति पत्र

Frey, H. Intertextuality in Celan's poetry: "Zwölf Jahre" and "Auf Reisen" / Hans-Jost Frey. Word traces : readings of Paul Celan.(1994).

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Frey, Hans-Jost. "Intertextuality in Celan's Poetry: "Zwölf Jahre" and "Auf Reisen" / Hans-Jost Frey." Word Traces : Readings of Paul Celan.(1994) .

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Frey, Hans-Jost. "Intertextuality in Celan's Poetry: "Zwölf Jahre" and "Auf Reisen" / Hans-Jost Frey." Word Traces : Readings of Paul Celan.(1994), .