Davison, C. (1921). A manual of seismology. University Press.
Lua i Stíl Chicago (17ú heag.)Davison, Charles. A Manual of Seismology. Cambridge [Eng.]: University Press, 1921.
Lua MLA (8ú heag.)Davison, Charles. A Manual of Seismology. University Press, 1921.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.