Παραπομπή APA

Cough C. (1974). A user's guide to copyright national library and information services: A handbook for planners. Butter worths.

Παραπομπή Chicago Style

Cough C. A User's Guide to Copyright National Library and Information Services: A Handbook for Planners. London: Butter worths, 1974.

Παραπομπή MLA

Cough C. A User's Guide to Copyright National Library and Information Services: A Handbook for Planners. Butter worths, 1974.