SHARMA P C. (2005). TEXTBOOK OF PRODUCTION TECHNOLOGY. S.CHAND & COMPANY LTD.
Lua i Stíl Chicago (17ú heag.)SHARMA P C. TEXTBOOK OF PRODUCTION TECHNOLOGY. NEW DELHI: S.CHAND & COMPANY LTD, 2005.
Lua MLA (9ú heag.)SHARMA P C. TEXTBOOK OF PRODUCTION TECHNOLOGY. S.CHAND & COMPANY LTD, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.