APA
Carnegie D., . (1956). How to develop self-confidence and influence people by public speaking. Pocket books, New York: .
Chicago
Carnegie Dale, . 1956. How to develop self-confidence and influence people by public speaking. Pocket books, New York: .
Harvard
Carnegie D., . (1956). How to develop self-confidence and influence people by public speaking. Pocket books, New York: .
MLA
Carnegie Dale, . How to develop self-confidence and influence people by public speaking. Pocket books, New York: . 1956.