| APA | NHAO. (2012, February 16). In Acronym Geek. Retrieved 12:57, February 16, 2012, from http://www.acronymgeek.com/NHAO |
| MLA | "NHAO." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/NHAO>. |
| MHRA | 'NHAO', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/NHAO> [accessed 16 February 2012] |
| Chicago | "NHAO", http://www.acronymgeek.com/NHAO (accessed February 16, 2012). |
| CBE/CSE | NHAO [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/NHAO. |
| Bluebook | NHAO, http://www.acronymgeek.com/NHAO (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NHAO, http://www.acronymgeek.com/NHAO (optional description here) (as of Feb. 16, 2012, 12:57). |
| AMA | NHAO. Acronym Geek. February 16, 2012, 12:57. Available at: http://www.acronymgeek.com/NHAO. Accessed February 16, 2012, 12:57. |