APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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