Squires, G. L. (1968). Practical physics (Third Edition.). Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Squires, Gordon Leslie. Practical Physics. Third Edition. Cambridge: Cambridge University Press, 1968.
Lua MLA (8ú heag.)Squires, Gordon Leslie. Practical Physics. Third Edition. Cambridge University Press, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.