Owen, Harrison. Open Space Technology : A User's Guide (3rd Edition).
  : Berrett-Koehler Publishers, . p 1
  http://site.ebrary.com/id/10315436?ppg=1
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  May not be reproduced in any form without permission from the publisher,
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  Owen, Harrison. Open Space Technology : A User's Guide (3rd Edition).
  : Berrett-Koehler Publishers, . p 2
  http://site.ebrary.com/id/10315436?ppg=2
  Copyright © Berrett-Koehler Publishers. . All rights reserved.
  May not be reproduced in any form without permission from the publisher,
  except fair uses permitted under U.S. or applicable copyright law.
  Owen, Harrison. Open Space Technology : A User's Guide (3rd Edition).
  : Berrett-Koehler Publishers, . p 3
  http://site.ebrary.com/id/10315436?ppg=3
  Copyright © Berrett-Koehler Publishers. . All rights reserved.
  May not be reproduced in any form without permission from the publisher,
  except fair uses permitted under U.S. or applicable copyright law.
  Owen, Harrison. Open Space Technology : A User's Guide (3rd Edition).
  : Berrett-Koehler Publishers, . p 4
  http://site.ebrary.com/id/10315436?ppg=4
  Copyright © Berrett-Koehler Publishers. . All rights reserved.
  May not be reproduced in any form without permission from the publisher,
  except fair uses permitted under U.S. or applicable copyright law.