APA-viite (7. p.)
Varnum, K. J. (2012). Drupal in libraries. ALA TechSource, an imprint of the American Library Association.
Chicago-viite (17. p.)
Varnum, Kenneth J. Drupal in Libraries. Chicago: ALA TechSource, an imprint of the American Library Association, 2012.
MLA-viite (9. p.)
Varnum, Kenneth J. Drupal in Libraries. ALA TechSource, an imprint of the American Library Association, 2012.
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