Citazione APA

Carnegie, D., & Jibu Jamal. (2011). How to develop self confidence and influence people by public speaking. Harmony books.

Stile di citazione Chicago

Carnegie, Dale, e Jibu Jamal. How to Develop Self Confidence and Influence People by Public Speaking. Calicut: Harmony books, 2011.

Citazione MLA

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