McKim, R.J. "Nathaniel Everett Green: Artist and Astronomer." Journal of the British Astronomical Association 1st ser. 114.1 (2004): 13-23. Journal of the British Astronomical Association. Web. 20 Feb. 2015.
Sheehan, William. "The Planet Mars: A History of Observation and Discovery." The Planet Mars. University of Arizona, n.d. Web. 21 Feb. 2015.
No comments:
Post a Comment