David J. Sumanth. Productivity Engineering and Management: .. McGraw- Hill.
Lua i Stíl Chicago (17ú heag.)David J. Sumanth. Productivity Engineering and Management: .. McGraw- Hill.
Lua MLA (8ú heag.)David J. Sumanth. Productivity Engineering and Management: .. McGraw- Hill.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.