Não informado. (1966). Physics Education. Institute of Physics.
Lua i Stíl Chicago (17ú heag.)Não informado. Physics Education. London: Institute of Physics, 1966.
Lua MLA (8ú heag.)Não informado. Physics Education. Institute of Physics, 1966.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.