Powers, Z. (2019). First cosmic velocity. G. P. Putnam's Sons, an imprint of Penguin Random House LLC.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPowers, Zach. First Cosmic Velocity. New York: G. P. Putnam's Sons, an imprint of Penguin Random House LLC, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPowers, Zach. First Cosmic Velocity. G. P. Putnam's Sons, an imprint of Penguin Random House LLC, 2019.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.