Smith David. (2015). Exploring Innovation (3rd.). McGraw Hill.
Lua i Stíl Chicago (17ú heag.)Smith David. Exploring Innovation. 3rd. McGraw Hill, 2015.
Lua MLA (9ú heag.)Smith David. Exploring Innovation. 3rd. McGraw Hill, 2015.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.