Patrick H. O’Neil 
Essentials of Comparative Politics (Fifth International Student Edition) [PDF ebook] 

The most flexible package for comparative politics provides the best value for students.The Essentials of Comparative Politics family provides all of the tools professors need to introduce the study and comparison of political systems. A brief conceptual textbook of the core ideas behind comparative politics, a complete casebook of thirteen country studies, and a comprehensive reader of secondary and primary sourcestogether these give instructors the utmost flexibility in structuring their courses without asking students to pay too much.