Further reading

If you want to go deeper than the app, these books are widely used by people studying behavior analysis. They are suggestions only — pick what fits your exam and level.

• Applied Behavior Analysis
  John O. Cooper, Timothy E. Heron, William L. Heward
  Broad reference on principles, measurement, design and procedures
  Useful for:BCaBABCBA
• Behavior Modification: Principles and Procedures
  Raymond G. Miltenberger
  Accessible introduction to core procedures
  Useful for:RBTBCaBABCBA
• Ethics for Behavior Analysts
  Jon S. Bailey, Mary R. Burch
  Applying the professional ethics code to everyday cases
  Useful for:RBTBCaBABCBA
• Understanding Behaviorism
  William M. Baum
  Philosophical foundations and radical behaviorism
  Useful for:BCaBABCBA
• Science and Human Behavior
  B. F. Skinner
  Classic account of operant principles applied to people
  Useful for:BCaBABCBA
• Verbal Behavior
  B. F. Skinner
  The functional analysis of language (verbal operants)
  Useful for:BCaBABCBA
• Strategies and Tactics of Behavioral Research and Practice
  James M. Johnston, Henry S. Pennypacker, Gina Green
  Measurement and single-case research methods in depth
  Useful for:BCBA
• Single-Case Research Designs
  Alan E. Kazdin
  Experimental designs for clinical and applied settings
  Useful for:BCBA
• Handbook of Applied Behavior Analysis
  Wayne W. Fisher, Cathleen C. Piazza, Henry S. Roane (eds.)
  Assessment and treatment across populations
  Useful for:BCBA
• 25 Essential Skills and Strategies for the Professional Behavior Analyst
  Jon S. Bailey, Mary R. Burch
  Professional, supervision and consultation skills
  Useful for:BCaBABCBA