Mohr, L. M., Washburne, C., & Beatty, W. W. (1934). Social studies series. Winnetka Educational Press.
Lua i Stíl Chicago (17ú heag.)Mohr, Louise Maud, Carleton Washburne, agus Willard W. Beatty. Social Studies Series. Winnetka, Illinois: Winnetka Educational Press, 1934.
Lua MLA (8ú heag.)Mohr, Louise Maud, et al. Social Studies Series. Winnetka Educational Press, 1934.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.