References –

Holland, J. L. (1997). Making vocational choices: A theory of vocational personalities and work environments (3rd  ed.). Odessa, FL:  Psychological Assessment Resources, Inc.

Holland, J. L. (1959). A theory of vocational choice. Journal of Counseling Psychology, 6, 35-45.

Liao, H-Y., Armstrong, P. I., & Rounds, J. (2008). “Development and initial validation of public domain basic interest markers”. Journal of Vocational Behavior, 73, 159-183.