| APA | HTN. (2012, February 10). In Acronym Geek. Retrieved 08:21, February 10, 2012, from http://www.acronymgeek.com/HTN |
| MLA | "HTN." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/HTN>. |
| MHRA | 'HTN', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/HTN> [accessed 10 February 2012] |
| Chicago | "HTN", http://www.acronymgeek.com/HTN (accessed February 10, 2012). |
| CBE/CSE | HTN [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/HTN. |
| Bluebook | HTN, http://www.acronymgeek.com/HTN (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HTN, http://www.acronymgeek.com/HTN (optional description here) (as of Feb. 10, 2012, 08:21). |
| AMA | HTN. Acronym Geek. February 10, 2012, 08:21. Available at: http://www.acronymgeek.com/HTN. Accessed February 10, 2012, 08:21. |