Citazione Stile APA (7a Edizione)

John, R. S. (2011). The 8 Traits successful people have in common. Embassy book.

Citazione stile Chigago Style (17a edizione)

John, Richard St. The 8 Traits Successful People Have in Common. Mumbai: Embassy book, 2011.

Citatione MLA (9a ed.)

John, Richard St. The 8 Traits Successful People Have in Common. Embassy book, 2011.