APA استشهاد

Girijakumar. (1972). purchase of books by public libraries. HMSO.

استشهاد بنمط شيكاغو

Girijakumar. Purchase of Books by Public Libraries. London: HMSO, 1972.

MLA استشهاد

Girijakumar. Purchase of Books by Public Libraries. HMSO, 1972.