Quillen, I. J., & Hanna, L. A. (1948). Education for social competence: Curriculum and instruction in secondary-school social studies. Scott, Foresman.
Chicago-referens (17:e uppl.)Quillen, Isaac James, och Lavone Agnes Hanna. Education for Social Competence: Curriculum and Instruction in Secondary-school Social Studies. Chicago: Scott, Foresman, 1948.
MLA-referens (9:e uppl.)Quillen, Isaac James, och Lavone Agnes Hanna. Education for Social Competence: Curriculum and Instruction in Secondary-school Social Studies. Scott, Foresman, 1948.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.