Michaelis, J. U., Haskins, R. W., & Johnston, A. M. (1965). The social sciences: Foundations of the social studies. Allyn and Bacon.
Lua i Stíl Chicago (17ú heag.)Michaelis, John Udell, Ralph W. Haskins, agus Aaron Montgomery Johnston. The Social Sciences: Foundations of the Social Studies. [Boston]: Allyn and Bacon, 1965.
Lua MLA (8ú heag.)Michaelis, John Udell, et al. The Social Sciences: Foundations of the Social Studies. Allyn and Bacon, 1965.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.