(2004). Life. Boston: McGraw-Hill Higher Education.
Chicago Style aipamenaLife. Boston: McGraw-Hill Higher Education, 2004.
MLA aipamenaLife. Boston: McGraw-Hill Higher Education, 2004.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
(2004). Life. Boston: McGraw-Hill Higher Education.
Chicago Style aipamenaLife. Boston: McGraw-Hill Higher Education, 2004.
MLA aipamenaLife. Boston: McGraw-Hill Higher Education, 2004.