Brancazio, P. J. (1975). The nature of physics. Macmillan.
Lua i Stíl Chicago (17ú heag.)Brancazio, Peter J. The Nature of Physics. New York: Macmillan, 1975.
Lua MLA (9ú heag.)Brancazio, Peter J. The Nature of Physics. Macmillan, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.