Cough C. (1974). A user's guide to copyright national library and information services: A handbook for planners. Butter worths.
استشهاد بنمط شيكاغوCough C. A User's Guide to Copyright National Library and Information Services: A Handbook for Planners. London: Butter worths, 1974.
MLA استشهادCough C. A User's Guide to Copyright National Library and Information Services: A Handbook for Planners. Butter worths, 1974.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.