Conversation. TESOL Quarterly, Vol XIV. No. 4. December 1980.
Ethnomethodologists set out to discover what methods (--methodolog--) people (ethno--) use to participate and make sense of interaction. They view discourse as a developing process, rather than a finished product. Accordingly, instead of waiting until a discourse is finished, and then analyse it as a whole, from outside and with the benefit of hindsight, ethnomethodologists try to understand how it unfolds in time.
Jack C. Richards, Willy A. Renandya - 2002 Methodology in language teaching: an anthology of current practice
Brown & Yule, Teaching the Spoken Language
To produce an extended discourse is to create a structured sequence of utterances that help the listener create a coherent mental representation of what he is trying to say.