DttP: A Quarterly Journal of Government Information Practice & Perspective. American Library Association.
Chicago-referens (17:e uppl.)DttP: A Quarterly Journal of Government Information Practice & Perspective. American Library Association.
MLA-referens (8:e uppl.)DttP: A Quarterly Journal of Government Information Practice & Perspective. American Library Association.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.