Johnson, S. (2003). Who moved my cheese?: An amazing way to deal with change in your work and in your life. G.P. Putnam's Sons.

Johnson, Spencer. Who Moved My Cheese?: An Amazing Way to Deal with Change in Your Work and in Your Life. New York: G.P. Putnam's Sons, 2003.

Johnson, Spencer. Who Moved My Cheese?: An Amazing Way to Deal with Change in Your Work and in Your Life. G.P. Putnam's Sons, 2003.