Willoughby, C. C. (1905). A few ethnological specimens collected by Lewis and Clark. New Era Print. Co..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWilloughby, Charles Clark. A Few Ethnological Specimens Collected by Lewis and Clark. [Lancaster, Pa.: New Era Print. Co., 1905.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWilloughby, Charles Clark. A Few Ethnological Specimens Collected by Lewis and Clark. New Era Print. Co., 1905.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.