एपीए उद्धरण

Ken Varnum. (2012). Drupal in Libraries. Facet.

शिकागो स्टाइल उद्धरण

Ken Varnum. Drupal in Libraries. Facet, 2012.

एमएलए उद्धरण

Ken Varnum. Drupal in Libraries. Facet, 2012.