books.google.ca - "... Hopper's aim is to begin to reveal to us the complex world of telephone conversation, and that is what he succeeds marvellously in doing." —Discourse & Society"A guided tour through the interior world of phone interactions, ÂTelephone Conversation is a playful, often poetic excursion into the...http://books.google.ca/books/about/Telephone_Conversation.html?id=nS0PTq_4laIC&q=speaking+turns&utm_source=gb-gplus-shareTelephone Conversation