Kaler, J. (2011). Astronomy ii: Stars, galaxies, and the universe (Unabridged.). Recorded Books Inc..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKaler, James. Astronomy Ii: Stars, Galaxies, and the Universe. Unabridged. Prince Frederick: Recorded Books Inc., 2011.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKaler, James. Astronomy Ii: Stars, Galaxies, and the Universe. Unabridged. Recorded Books Inc., 2011.
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