| APA | HSEN. (2012, February 16). In Acronym Geek. Retrieved 03:11, February 16, 2012, from http://www.acronymgeek.com/HSEN |
| MLA | "HSEN." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/HSEN>. |
| MHRA | 'HSEN', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/HSEN> [accessed 16 February 2012] |
| Chicago | "HSEN", http://www.acronymgeek.com/HSEN (accessed February 16, 2012). |
| CBE/CSE | HSEN [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/HSEN. |
| Bluebook | HSEN, http://www.acronymgeek.com/HSEN (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HSEN, http://www.acronymgeek.com/HSEN (optional description here) (as of Feb. 16, 2012, 03:11). |
| AMA | HSEN. Acronym Geek. February 16, 2012, 03:11. Available at: http://www.acronymgeek.com/HSEN. Accessed February 16, 2012, 03:11. |