Raven, P. H. (2005). Biology (7th ed.). Boston: McGraw-Hill, Higher Education.
Chicago Style aipamenaRaven, Peter H. Biology. 7th ed. Boston: McGraw-Hill, Higher Education, 2005.
MLA aipamenaRaven, Peter H. Biology. 7th ed. Boston: McGraw-Hill, Higher Education, 2005.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.