Wallis, V. (2013). Two old women, [anniversary edition]: An alaska legend of betrayal, courage and survival.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWallis, Velma. Two Old Women, [anniversary Edition]: An Alaska Legend of Betrayal, Courage and Survival. 2013.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWallis, Velma. Two Old Women, [anniversary Edition]: An Alaska Legend of Betrayal, Courage and Survival. 2013.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.