Vlcek, C. W., & Wiman, R. V. (1989). Managing media services: Theory and practice. Libraries Unlimited.
Lua i Stíl Chicago (17ú heag.)Vlcek, Charles W., agus Raymond V. Wiman. Managing Media Services: Theory and Practice. Englewood, Colo.: Libraries Unlimited, 1989.
Lua MLA (8ú heag.)Vlcek, Charles W., agus Raymond V. Wiman. Managing Media Services: Theory and Practice. Libraries Unlimited, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.