Orr, F. W. (1938). Essentials of effective speaking; a handbook for a beginning course in speaking. The Macmillan company.
Chicago-Zitierstil (17. Ausg.)Orr, Frederick Wesley. Essentials of Effective Speaking; a Handbook for a Beginning Course in Speaking. New York: The Macmillan company, 1938.
MLA-Zitierstil (9. Ausg.)Orr, Frederick Wesley. Essentials of Effective Speaking; a Handbook for a Beginning Course in Speaking. The Macmillan company, 1938.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.