APA (7 वां संस्करण) प्रशस्ति पत्र
ebrary, Inc, & Junkers, G. (2006). Is it too late?: Key papers on psychoanalysis and ageing [sic] : papers in International journal of psychoanalysis key papers series. Karnac Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
ebrary, Inc, और Gabriele Junkers. Is It Too Late?: Key Papers on Psychoanalysis and Ageing [sic] : Papers in International Journal of Psychoanalysis Key Papers Series. London: Karnac Books, 2006.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
ebrary, Inc, और Gabriele Junkers. Is It Too Late?: Key Papers on Psychoanalysis and Ageing [sic] : Papers in International Journal of Psychoanalysis Key Papers Series. Karnac Books, 2006.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.