Anderson, H. R., Lindquist, E. F., & Berg, H. D. (1947). Selected test items in American history. [s.n.].
Lua i Stíl Chicago (17ú heag.)Anderson, Howard Richmond, E. F. Lindquist, agus Harry D. Berg. Selected Test Items in American History. Washington: [s.n.], 1947.
Lua MLA (9ú heag.)Anderson, Howard Richmond, et al. Selected Test Items in American History. [s.n.], 1947.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.