Exploring the Legislative Branch (Searchlight Books ™ ― Getting into Government)
Lerner Publications (Tm)
State Legislatures Today: Politics under the Domes
Rowman & Littlefield Publishers
Congressional Procedure: A Practical Guide to the Legislative Process in the U.S. Congress: The House of Representatives and Senate Explained
TheCapitol.Net
Checks in the Balance: Legislative Capacity and the Dynamics of Executive Power (Princeton Studies in American Politics: Historical, International, and Comparative Perspectives, 193)