Não informado. (1962). Report. University of British Columbia, Department of Geological Sciences.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Report. Vancouver, Canada: University of British Columbia, Department of Geological Sciences, 1962.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Report. University of British Columbia, Department of Geological Sciences, 1962.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.