Giffin, W. M., & Provines, H. G. (1909). Civics for young Americans: Or, first lessons in government (4th ed., rev.). A. Lovell.
Lua i Stíl Chicago (17ú heag.)Giffin, William M., agus Harris G. Provines. Civics for Young Americans: Or, First Lessons in Government. 4th ed., rev. New York: A. Lovell, 1909.
Lua MLA (8ú heag.)Giffin, William M., agus Harris G. Provines. Civics for Young Americans: Or, First Lessons in Government. 4th ed., rev. A. Lovell, 1909.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.