APA (7th ed.) Citation

Smith, D. E. P., Knudsvig, G. M., & Walter, T. L. (1998). Critical thinking: Building the basics. Wadsworth.

Chicago Style (17th ed.) Citation

Smith, Donald E. P., Glenn M. Knudsvig, and Timothy L. Walter. Critical Thinking: Building the Basics. Belmont, CA [u.a.]: Wadsworth, 1998.

MLA (9th ed.) Citation

Smith, Donald E. P., et al. Critical Thinking: Building the Basics. Wadsworth, 1998.