Sangha Means Community
   Dharma talk by on the role of friends and community in the spiritual life.
   http://www.dzogchen.org/teachings/talks/dtalk-94dec12.html

Sangha: The Ideal World  Community
   An analysis of the different types of sangha, and their relationship to the world community.
   http://www.saigon.com/~anson/ebud/ebdha062.htm

The Dharma Tree
   A primer of the role of sangha in the Buddhist life.
   http://www.saigon.com/~anson/ebud/ebdha034.htm

The Meaning of Sangha
   Essay on the thesis that the monastic order is the true "sangha" of Buddhism.
   http://www.buddhistinformation.com/meaning_of_sangha.htm