Carnegie, D. (1956). How to develop self-confidence and influence people by public speaking. New York: Pocket Books.
Trích dẫn kiểu ChicagoCarnegie, Dale. How to Develop Self-confidence and Influence People By Public Speaking. New York: Pocket Books, 1956.
Trích dẫn MLACarnegie, Dale. How to Develop Self-confidence and Influence People By Public Speaking. New York: Pocket Books, 1956.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.