Smith, P. G. Shortening the Product Development Cycle. Research management (Now: research technology management).
Lua i Stíl Chicago (17ú heag.)Smith, Preston G. "Shortening the Product Development Cycle." Research Management (Now: Research Technology Management) .
Lua MLA (9ú heag.)Smith, Preston G. "Shortening the Product Development Cycle." Research Management (Now: Research Technology Management), .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.