Carnegie, D. (1990). How to develop self-confidence and influence people by public speaking. Cedar.
Παραπομπή σε μορφή Chicago (17η εκδ.)Carnegie, Dale. How to Develop Self-confidence and Influence People by Public Speaking. London: Cedar, 1990.
Παραπομπή σε μορφή MLA (9th εκδ.)Carnegie, Dale. How to Develop Self-confidence and Influence People by Public Speaking. Cedar, 1990.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.