The Official Academy Awards Database. Academy of Motion Picture Arts and Sciences. Inačica izvorne stranice arhivirana 8. veljače 2009. Pristupljeno 18. veljače 2012. Reader must select "1927/28" in the "Award Year(s):" drop-down menu and press "Search".
oscars.org
History of the Academy Awards. Academy of Motion Picture Arts and Sciences. Inačica izvorne stranice arhivirana 8. travnja 2010. Pristupljeno 6. svibnja 2010.
web.archive.org
The Official Academy Awards Database. Academy of Motion Picture Arts and Sciences. Inačica izvorne stranice arhivirana 8. veljače 2009. Pristupljeno 18. veljače 2012. Reader must select "1927/28" in the "Award Year(s):" drop-down menu and press "Search".
History of the Academy Awards. Academy of Motion Picture Arts and Sciences. Inačica izvorne stranice arhivirana 8. travnja 2010. Pristupljeno 6. svibnja 2010.