"Jeremiah Horrocks (British Astronomer)." Encyclopedia Britannica Online. Encyclopedia Britannica, n.d.
Web. 18 Oct. 2013. http://www.britannica.com/EBchecked/topic/272141/Jeremiah-Horrocks.
"Transit of Venus - History - UCLan." Transit of Venus - History - UCLan. N.p., n.d. Web. 18 Oct.
2013. <http://www.transit-of-venus.org.uk/history.htm>.
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