Welton, D. A. (1981). Children and their world: Strategies for teaching social studies (2nd ed.). Houghton Mifflin.
Lua i Stíl Chicago (17ú heag.)Welton, David A. Children and Their World: Strategies for Teaching Social Studies. 2nd ed. Boston: Houghton Mifflin, 1981.
Lua MLA (9ú heag.)Welton, David A. Children and Their World: Strategies for Teaching Social Studies. 2nd ed. Houghton Mifflin, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.