Watkins, D. E., & De Bower, H. F. (1927). Effective speech: Including mental training and the development of personality. New York: The De Bower Publishing.
Chicago ZitierstilWatkins, Dwight Everett, und Herbert Francis De Bower. Effective Speech: Including Mental Training and the Development of Personality. New York: The De Bower Publishing, 1927.
MLA ZitierstilWatkins, Dwight Everett, und Herbert Francis De Bower. Effective Speech: Including Mental Training and the Development of Personality. New York: The De Bower Publishing, 1927.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.