i know there are fair few management theories but the only ones you need to know is:
classical - planning, organising, controlling, hierarchal (pyramid) structure, autocratic (strict)
Behavioural - leading, motivating, communicating, flat management structure, partcipative
political - bargaining, power and influence, coalitions
and i think in the heinemann text book there are stacks:
Matrix Approach
Outsourcing Approach
Product line approach
Staff empowerment approach
Total Quality Managment approach
Team work approach
Technology approach
Decentralised Approach
Flat management Approach
This may help
http://www.valuebasedmanagement.net/
http://www.managementhelp.org/mgmnt/cntmpory.htm
i went through some websites but the first one is the best i reckon