Abramowitz, J. (1969). American history study lessons (Rev. ed.). Follett.
Lua i Stíl Chicago (17ú heag.)Abramowitz, Jack. American History Study Lessons. Rev. ed. Chicago: Follett, 1969.
Lua MLA (8ú heag.)Abramowitz, Jack. American History Study Lessons. Rev. ed. Follett, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.