Sawhney A.K. (1986). Electrical & Electronic Measurment Instrumention. New Delhi.
Lua i Stíl Chicago (17ú heag.)Sawhney A.K. Electrical & Electronic Measurment Instrumention. Dhanpatrai: New Delhi, 1986.
Lua MLA (9ú heag.)Sawhney A.K. Electrical & Electronic Measurment Instrumention. New Delhi, 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.