| APA | 9H. (2012, February 10). In Acronym Geek. Retrieved 10:41, February 10, 2012, from http://www.acronymgeek.com/9H |
| MLA | "9H." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/9H>. |
| MHRA | '9H', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/9H> [accessed 10 February 2012] |
| Chicago | "9H", http://www.acronymgeek.com/9H (accessed February 10, 2012). |
| CBE/CSE | 9H [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/9H. |
| Bluebook | 9H, http://www.acronymgeek.com/9H (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, 9H, http://www.acronymgeek.com/9H (optional description here) (as of Feb. 10, 2012, 10:41). |
| AMA | 9H. Acronym Geek. February 10, 2012, 10:41. Available at: http://www.acronymgeek.com/9H. Accessed February 10, 2012, 10:41. |