Citazione Stile APA (7a Edizione)

American Library Association & Article 19 (Organization). (1991). Information freedom and censorship: World report 1991. American Library Association.

Citazione stile Chigago Style (17a edizione)

American Library Association e Article 19 (Organization). Information Freedom and Censorship: World Report 1991. Chicago: American Library Association, 1991.

Citatione MLA (9a ed.)

American Library Association e Article 19 (Organization). Information Freedom and Censorship: World Report 1991. American Library Association, 1991.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.