Belkić, K. (2003). The occupational stress index: Approach derived from cognitive ergonomics and brain research for clinical practice. Cambridge International Science Pub..
Lua i Stíl Chicago (17ú heag.)Belkić, Karen. The Occupational Stress Index: Approach Derived from Cognitive Ergonomics and Brain Research for Clinical Practice. Cambridge: Cambridge International Science Pub., 2003.
Lua MLA (9ú heag.)Belkić, Karen. The Occupational Stress Index: Approach Derived from Cognitive Ergonomics and Brain Research for Clinical Practice. Cambridge International Science Pub., 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.