APA (7th ed.) Zitazioa
National Academy of Engineering. (2014). Memorial tributes. National Academies Press.
Chicago Style (17th ed.) Zitazioa
National Academy of Engineering. Memorial Tributes. Washington, District of Columbia: National Academies Press, 2014.
MLA (9th ed.) Zitazioa
National Academy of Engineering. Memorial Tributes. National Academies Press, 2014.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.