AGGARWAL HEMCHANDRA. (1992). EXECUTIVE DIRECTORY: ENGINEERING INDUSTRIES. AGGARWAL PUBLICATIONS.
Lua i Stíl Chicago (17ú heag.)AGGARWAL HEMCHANDRA. EXECUTIVE DIRECTORY: ENGINEERING INDUSTRIES. MUMBAI: AGGARWAL PUBLICATIONS, 1992.
Lua MLA (9ú heag.)AGGARWAL HEMCHANDRA. EXECUTIVE DIRECTORY: ENGINEERING INDUSTRIES. AGGARWAL PUBLICATIONS, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.