Boyd, E. L. (1969). Ben follows old trails. Printed by C. W. Hill.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBoyd, Edith L. Ben Follows Old Trails. Spokane, Wash.: Printed by C. W. Hill, 1969.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBoyd, Edith L. Ben Follows Old Trails. Printed by C. W. Hill, 1969.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.