Feig, B. (1993). The new products workshop: Hands-on tools for developing winners. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Feig, Barry. The New Products Workshop: Hands-on Tools for Developing Winners. New York: McGraw-Hill, 1993.
Lua MLA (9ú heag.)Feig, Barry. The New Products Workshop: Hands-on Tools for Developing Winners. McGraw-Hill, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.