P. A. Lamal (Lamal, P. A.)

• 
  Behavioral Analysis of Societies and Cultural Practices
  by P. A. Lamal
  Hardcover, Taylor & Francis Group, ISBN 1560321237 (1-56032-123-7)
• 
  Cultural Contingencies : Behavior Analytic Perspectives on Cultural Practices
  by P. A. Lamal
  Hardcover, Harcourt Education, ISBN 0275957764 (0-275-95776-4)