Caldwell, E. C. (1952). Course of study and teacher's manual for United States history and government 7z: Senior high schools. Sacramento City Unified School District.
Chicago-Zitierstil (17. Ausg.)Caldwell, Esther C. Course of Study and Teacher's Manual for United States History and Government 7z: Senior High Schools. Sacramento, California: Sacramento City Unified School District, 1952.
MLA-Zitierstil (9. Ausg.)Caldwell, Esther C. Course of Study and Teacher's Manual for United States History and Government 7z: Senior High Schools. Sacramento City Unified School District, 1952.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.