APA-referens

Penna, C. V. (1977). National library and information services: A handbook for planners. Butterworths.

Chicago-stil citat

Penna, C. V. National Library and Information Services: A Handbook for Planners. London: Butterworths, 1977.

MLA-referens

Penna, C. V. National Library and Information Services: A Handbook for Planners. Butterworths, 1977.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.