NELKON, M. P. (1995). Advanced level physic. CBS Publishers.
Lua i Stíl Chicago (17ú heag.)NELKON, Michael Parker. Advanced Level Physic. CBS Publishers, 1995.
Lua MLA (9ú heag.)NELKON, Michael Parker. Advanced Level Physic. CBS Publishers, 1995.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.