APA استشهاد

Dale Carnegie. (2011). How to develop self confidence and influence people by public speaking. Harmony books.

استشهاد بنمط شيكاغو

Dale Carnegie. How to Develop Self Confidence and Influence People by Public Speaking. Kozhikode: Harmony books, 2011.

MLA استشهاد

Dale Carnegie. How to Develop Self Confidence and Influence People by Public Speaking. Harmony books, 2011.