Biggs, A., & Hagins, W.C. (2007).
Biology
. New York: Glencoe/McGraw-Hill. High school level biology textbook
Hopson, J. L., & Prostlethwait, J. H. (2006).
Modern Biology
. New York: Holt, Rinehart & Winston. High school level biology textbook
Johnson, G., & Raven P. (2004).
Biology
. New York: Holt, Rinehart and Winston. High school level biology textbook
Villarreal, L. P. (2004, December). Are Viruses Alive?
Scientific American,
Vol. 291 Issue 6, p100-105, 6p, 1 diagram, 4c. Article at the high school level providing feedback on the debate about viruses
http://www.cdc.gov/std/hpv/STDFact-HPV-vaccine.htm Excellent website from the Center for Disease Control and Prevention providing facts about HPV.
