| APA | Smart Define. (-0001). non-rapid eye movement sleep thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/non-rapid_eye_movement_sleep/thesaurus/broader |
| Chicago | Smart Define. -0001. "non-rapid eye movement sleep thesaurus" https://smartdefine.org/non-rapid_eye_movement_sleep/thesaurus/broader (accessed September 25, 2026). |
| Harvard | Smart Define -0001, non-rapid eye movement sleep thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/non-rapid_eye_movement_sleep/thesaurus/broader>. |
| MLA | Smart Define. "non-rapid eye movement sleep thesaurus" 30 November -0001. Web. 25 September 2026. <https://smartdefine.org/non-rapid_eye_movement_sleep/thesaurus/broader> |