APA সাইটেশন

Cough C S. (1979). National library and information services: A handbook for planners. Butter worths.

শিকাগো স্টাইলে সাইটেশন

Cough C S. National Library and Information Services: A Handbook for Planners. London: Butter worths, 1979.

এমএলএ সাইটেশন

Cough C S. National Library and Information Services: A Handbook for Planners. Butter worths, 1979.