Vlcek, C. W., & Wiman, R. V. (1989). Managing media services: Theory and practice. Libraries Unlimited.
Chicago-viite (17. p.)Vlcek, Charles W., ja Raymond V. Wiman. Managing Media Services: Theory and Practice. Englewood, Colo.: Libraries Unlimited, 1989.
MLA-viite (8. p.)Vlcek, Charles W., ja Raymond V. Wiman. Managing Media Services: Theory and Practice. Libraries Unlimited, 1989.
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