| APA | Smart Define. (-0001). national examination board in occupational safety and health thesaurus. Retrieved October 2, 2026, from https://smartdefine.org/national_examination_board_in_occupational_safety_and_health/thesaurus/broader |
| Chicago | Smart Define. -0001. "national examination board in occupational safety and health thesaurus" https://smartdefine.org/national_examination_board_in_occupational_safety_and_health/thesaurus/broader (accessed October 2, 2026). |
| Harvard | Smart Define -0001, national examination board in occupational safety and health thesaurus, Smart Define, viewed 2 October, 2026, <https://smartdefine.org/national_examination_board_in_occupational_safety_and_health/thesaurus/broader>. |
| MLA | Smart Define. "national examination board in occupational safety and health thesaurus" 30 November -0001. Web. 2 October 2026. <https://smartdefine.org/national_examination_board_in_occupational_safety_and_health/thesaurus/broader> |