| APA | NDHO. (2012, February 17). In Acronym Geek. Retrieved 02:35, February 17, 2012, from http://www.acronymgeek.com/NDHO |
| MLA | "NDHO." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/NDHO>. |
| MHRA | 'NDHO', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/NDHO> [accessed 17 February 2012] |
| Chicago | "NDHO", http://www.acronymgeek.com/NDHO (accessed February 17, 2012). |
| CBE/CSE | NDHO [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/NDHO. |
| Bluebook | NDHO, http://www.acronymgeek.com/NDHO (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NDHO, http://www.acronymgeek.com/NDHO (optional description here) (as of Feb. 17, 2012, 02:35). |
| AMA | NDHO. Acronym Geek. February 17, 2012, 02:35. Available at: http://www.acronymgeek.com/NDHO. Accessed February 17, 2012, 02:35. |