Παραπομπή APA

Whittaker, K. (1993). The Basics of library-based user services.

Παραπομπή Chicago Style

Whittaker, Kenneth. The Basics of Library-based User Services. London, Library Association, 1993.

Παραπομπή MLA

Whittaker, Kenneth. The Basics of Library-based User Services. 1993.