Gaya APA

Swanson, C, P., Colin, I, C. (NULL). The bush presidency first appraisals . New: New Jersey: Chatham House; 1991.

Gaya MLA

Swanson, Carl, P.., Colin, I., Campbell,. "The bush presidency first appraisals". New: New Jersey: Chatham House; 1991, NULL. Text.