Kaler, Jim. Web. 6 Jan 2012. <http://stars.astro.illinois.edu/sow/spica.html>.
Web. 6 Jan 2012. <http://www.constellationsofwords.com/stars/Spica.html>.
Bailey, Alice. "Highlights - Spica." Souled-Out. Lucis Publishing Co., 2003. Web. 6 Jan 2012. <http://www.souledout.org/cosmology/highlights/spicahighlights/spicahighlights.html>.
Web. 6 Jan 2012. <http://stardate.org/radio/program/2006-08-27 >.
Web. 6 Jan 2012. <http://www.google.com/imgres?q=spica constellation virgo&hl=en&safe=active&sa=X&biw=1207&bih=609&tbm=isch&prmd=imvns&tbnid=WSVyybf1Ihe_DM:&imgrefurl=>.
Web. 6 Jan 2012. <http://www.clipartpal.com/clipart_pd/space/constellations_10172.html&docid=PRQb1v9eZx2_gM&imgurl=http://www.clipartpal.com/_thumbs/pd/virgo_black.png&w=462&h=411&ei=VMQFT5iXKM3tggfswrCWAg&zoom=1&iact=hc&vpx=715&vpy=139&dur=507&hovh=212&hovw=238&tx=171&ty=136&sig=113911718238793009790&page=1&tbnh=132&tbnw=148&&ndsp=21&ved=1t:429,r:4,s:0>.
Web. 6 Jan 2012. <http://stardate.org/radio/program/2010-02-03>.
Web. 6 Jan 2012. <http://www.wwnorton.com/college/astronomy/21st-century-astro3/astrotours.asp&xgt;.
Fraser, Cain. "Nuclear Fusion in Stars." Universe Today. N.p., 02/1. Web. 6 Jan 2012. <http://www.universetoday.com/25247/nuclear-fusion-in-stars/>.
Web. 6 Jan 2012. <http://en.wikipedia.org/wiki/Protostar>.
Delehanty, Marc. "Stellar Evolution, the Lives of Stars." Astronomy Today. Web. 06 Jan. 2012. <http://www.astronomytoday.com/cosmology/evol.html>.
Cain, Fraser. "Nuclear Fusion In Stars." Universe Today. N.p., 12 Feb 2009. Web. 11 Jan 2012. <http://www.universetoday.com/25247/nuclear-fusion-in-stars/>.
Web. 6 Jan 2012. <http://www.constellationsofwords.com/stars/Spica.html>.
Bailey, Alice. "Highlights - Spica." Souled-Out. Lucis Publishing Co., 2003. Web. 6 Jan 2012. <http://www.souledout.org/cosmology/highlights/spicahighlights/spicahighlights.html>.
Web. 6 Jan 2012. <http://stardate.org/radio/program/2006-08-27 >.
Web. 6 Jan 2012. <http://www.google.com/imgres?q=spica constellation virgo&hl=en&safe=active&sa=X&biw=1207&bih=609&tbm=isch&prmd=imvns&tbnid=WSVyybf1Ihe_DM:&imgrefurl=>.
Web. 6 Jan 2012. <http://www.clipartpal.com/clipart_pd/space/constellations_10172.html&docid=PRQb1v9eZx2_gM&imgurl=http://www.clipartpal.com/_thumbs/pd/virgo_black.png&w=462&h=411&ei=VMQFT5iXKM3tggfswrCWAg&zoom=1&iact=hc&vpx=715&vpy=139&dur=507&hovh=212&hovw=238&tx=171&ty=136&sig=113911718238793009790&page=1&tbnh=132&tbnw=148&&ndsp=21&ved=1t:429,r:4,s:0>.
Web. 6 Jan 2012. <http://stardate.org/radio/program/2010-02-03>.
Web. 6 Jan 2012. <http://www.wwnorton.com/college/astronomy/21st-century-astro3/astrotours.asp&xgt;.
Fraser, Cain. "Nuclear Fusion in Stars." Universe Today. N.p., 02/1. Web. 6 Jan 2012. <http://www.universetoday.com/25247/nuclear-fusion-in-stars/>.
Web. 6 Jan 2012. <http://en.wikipedia.org/wiki/Protostar>.
Delehanty, Marc. "Stellar Evolution, the Lives of Stars." Astronomy Today. Web. 06 Jan. 2012. <http://www.astronomytoday.com/cosmology/evol.html>.
Cain, Fraser. "Nuclear Fusion In Stars." Universe Today. N.p., 12 Feb 2009. Web. 11 Jan 2012. <http://www.universetoday.com/25247/nuclear-fusion-in-stars/>.