Morrow, C. C., & Walker, G. (1983). The Preservation challenge: A guide to conserving library materials. Knowledge Industry Pub.
Chicago-viite (17. p.)Morrow, Carolyn Clark, ja Gay Walker. The Preservation Challenge: A Guide to Conserving Library Materials. White Plains, N.Y: Knowledge Industry Pub, 1983.
MLA-viite (9. p.)Morrow, Carolyn Clark, ja Gay Walker. The Preservation Challenge: A Guide to Conserving Library Materials. Knowledge Industry Pub, 1983.
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