Spinrad, L., Spinrad, T., Brown, J. M., & Miller, A. R. (1999). On this day in history. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Spinrad, Leonard, Thelma Spinrad, Jared M. Brown, agus Anistatia R. Miller. On This Day in History. [Paramus N.J.]: Prentice Hall, 1999.
Lua MLA (9ú heag.)Spinrad, Leonard, et al. On This Day in History. Prentice Hall, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.