GEVIRITZ, C. D. (1994). Developing New Products With Tqm Charles Gevitz. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)GEVIRITZ, Charles D. Developing New Products With Tqm Charles Gevitz. McGraw-Hill, 1994.
Lua MLA (8ú heag.)GEVIRITZ, Charles D. Developing New Products With Tqm Charles Gevitz. McGraw-Hill, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.