Association for Information Systems maintains a repository containing description of various theories used in Information Systems field.
I had submitted summary of LAP description to repository editors. Summary has been accepted and added in the repository.
Below is the link for LAP summary in the repository
http://www.istheory.yorku.ca/languageactionperspective.htm
Homepage for repository
http://www.istheory.yorku.ca/default.htm
Please do send me your comments, suggestions, additions or any modifications that you think needs to be made in LAP summary.