Roberts, B. C. (2019). Nikki on the line (First edition.). Little, Brown and Company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRoberts, Barbara Carroll. Nikki on the Line. First edition. New York ; Boston: Little, Brown and Company, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रRoberts, Barbara Carroll. Nikki on the Line. First edition. Little, Brown and Company, 2019.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.