Belkić, K. (2003). The occupational stress index: Approach derived from cognitive ergonomics and brain research for clinical practice. Cambridge International Science Pub..

Belkić, Karen. The Occupational Stress Index: Approach Derived from Cognitive Ergonomics and Brain Research for Clinical Practice. Cambridge: Cambridge International Science Pub., 2003.

Belkić, Karen. The Occupational Stress Index: Approach Derived from Cognitive Ergonomics and Brain Research for Clinical Practice. Cambridge International Science Pub., 2003.