BOOKS:

• Birren, F. (2012). Color Psychology and Color Therapy. Pickle Partners Publishing.
  – A classic on psychological and emotional effects of colour.

• Heller, E. (2009). Psychology of Color: How Colors Affect Us and How We Affect Colors. Universe.
  – Explores cultural and psychological aspects of colour.

• Walch, V. (2002). Color Theory: An essential guide to color. Chartwell Books.
  – Practical reference on colour theory and application.

JOURNALS & ARTICLES:

• Ou, L. C., et al. (2004). “A Study of Colour Emotion and Colour Preference. Part I: Colour Emotions for Single Colours.” Color Research & Application, 29(3), 232–240.

• Sonderegger, A., & Sauer, J. (2010). “The Influence of Design Aesthetics in Usability Testing: Effects on User Performance and Perceived Usability.” Applied Ergonomics, 41(3), 403–410.