APA

Barak O., . (2006). The Audacity Of Hope. new york: crown publishers.

Chicago

Barak Obama, . 2006. The Audacity Of Hope. new york: crown publishers.

Harvard

Barak O., . (2006). The Audacity Of Hope. new york: crown publishers.

MLA

Barak Obama, . The Audacity Of Hope. new york: crown publishers. 2006.