APA

Nelson M., . (2003). The Prezidency A to Z. Washington: CQ Press.

Chicago

Nelson M, . 2003. The Prezidency A to Z. Washington: CQ Press.

Harvard

Nelson M., . (2003). The Prezidency A to Z. Washington: CQ Press.

MLA

Nelson M, . The Prezidency A to Z. Washington: CQ Press. 2003.