Janssen, V., Biron, Harville, P. d., & Hatton, N. (1999). Black beauty: The best images of nine international photographers / Biron, Pierrre d'Harville, Norman Hatton ... [Editor: Volker Janssen]. Janssen.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रJanssen, Volker, Biron, Pierre d' Harville, और Norman Hatton. Black Beauty: The Best Images of Nine International Photographers / Biron, Pierrre D'Harville, Norman Hatton ... [Editor: Volker Janssen]. Simon`s Town: Janssen, 1999.
एमएलए (8वां संस्करण) प्रशस्ति पत्रJanssen, Volker, et al. Black Beauty: The Best Images of Nine International Photographers / Biron, Pierrre D'Harville, Norman Hatton ... [Editor: Volker Janssen]. Janssen, 1999.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.