Piper, W., & Mohanty, U. S. (2021). The little engine that could: 90th anniversary edition (Unabridged.). Listening Library.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPiper, Watty, और Ulka Simone Mohanty. The Little Engine That Could: 90th Anniversary Edition. Unabridged. New York: Listening Library, 2021.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPiper, Watty, और Ulka Simone Mohanty. The Little Engine That Could: 90th Anniversary Edition. Unabridged. Listening Library, 2021.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.