Kovarik Bill. (2011). Revolutions in Communication: Media History From Gutenberg to the Digital Age. Bloomsburg.
Chicago-viite (17. p.)Kovarik Bill. Revolutions in Communication: Media History From Gutenberg to the Digital Age. Newyork: Bloomsburg, 2011.
MLA-viite (9. p.)Kovarik Bill. Revolutions in Communication: Media History From Gutenberg to the Digital Age. Bloomsburg, 2011.
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