Callahan, S. G. (1966). Successful teaching in secondary schools: A guide for students and inservice teachers. Scott, Foresman.
Chicago-Zitierstil (17. Ausg.)Callahan, Sterling G. Successful Teaching in Secondary Schools: A Guide for Students and Inservice Teachers. Glenview, Ill: Scott, Foresman, 1966.
MLA-Zitierstil (9. Ausg.)Callahan, Sterling G. Successful Teaching in Secondary Schools: A Guide for Students and Inservice Teachers. Scott, Foresman, 1966.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.