APA (7 वां संस्करण) प्रशस्ति पत्र

Fickert, K. J. (1972). To heaven and back: The new morality in the plays of Friedrich Dürrenmatt. Univ. Pr. of Kentucky.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Fickert, Kurt J. To Heaven and Back: The New Morality in the Plays of Friedrich Dürrenmatt. Lexington: Univ. Pr. of Kentucky, 1972.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Fickert, Kurt J. To Heaven and Back: The New Morality in the Plays of Friedrich Dürrenmatt. Univ. Pr. of Kentucky, 1972.