Scoles, S. (2020). They are already here: UFO culture and why we see saucers (First Pegasus Books edition.). Pegasus Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रScoles, Sarah. They Are Already Here: UFO Culture and Why We See Saucers. First Pegasus Books edition. New York: Pegasus Books, 2020.
एमएलए (8वां संस्करण) प्रशस्ति पत्रScoles, Sarah. They Are Already Here: UFO Culture and Why We See Saucers. First Pegasus Books edition. Pegasus Books, 2020.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.