Herbert Gintis, Samuel Bowles, Robert T. Boyd, Ernst Fehr (eds.), Moral Sentiments and Material Interests: The Foundations of Cooperation in Economic Life (Economic Learning and Social Evolution). MIT 2005
John McMurtry, "How Competition Goes Wrong." Journal of Applied Philosophy, 8(2): 200–210, 1991.
Dennis Rivers, NewConversations.net, The Seven Challenges: A Workbook and Reader About Communicating More Cooperatively, fourth edition, 2005 – treats cooperation as a set of skills that can be improved.