| APA | HBNO. (2012, February 16). In Acronym Geek. Retrieved 21:55, February 16, 2012, from http://www.acronymgeek.com/HBNO |
| MLA | "HBNO." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/HBNO>. |
| MHRA | 'HBNO', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/HBNO> [accessed 16 February 2012] |
| Chicago | "HBNO", http://www.acronymgeek.com/HBNO (accessed February 16, 2012). |
| CBE/CSE | HBNO [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/HBNO. |
| Bluebook | HBNO, http://www.acronymgeek.com/HBNO (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HBNO, http://www.acronymgeek.com/HBNO (optional description here) (as of Feb. 16, 2012, 21:55). |
| AMA | HBNO. Acronym Geek. February 16, 2012, 21:55. Available at: http://www.acronymgeek.com/HBNO. Accessed February 16, 2012, 21:55. |