Perkins, H. C., & Muzzey, D. S. (1943). Students' objective-test manual: To accompany Muzzey's A history of our country (Rev. ed.). Ginn and Co..
Lua i Stíl Chicago (17ú heag.)Perkins, Howard C., agus David Saville Muzzey. Students' Objective-test Manual: To Accompany Muzzey's A History of Our Country. Rev. ed. Boston: Ginn and Co., 1943.
Lua MLA (8ú heag.)Perkins, Howard C., agus David Saville Muzzey. Students' Objective-test Manual: To Accompany Muzzey's A History of Our Country. Rev. ed. Ginn and Co., 1943.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.