Carnegie, D. (1956). How to develop self-confidence and influence people by public speaking. Pocket Books.
Citazione stile Chigago Style (17a edizione)Carnegie, Dale. How to Develop Self-confidence and Influence People by Public Speaking. Delhi: Pocket Books, 1956.
Citatione MLA (8a ed.)Carnegie, Dale. How to Develop Self-confidence and Influence People by Public Speaking. Pocket Books, 1956.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.