| APA | HE. (2012, February 14). In Acronym Geek. Retrieved 06:15, February 14, 2012, from http://www.acronymgeek.com/HE |
| MLA | "HE." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/HE>. |
| MHRA | 'HE', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/HE> [accessed 14 February 2012] |
| Chicago | "HE", http://www.acronymgeek.com/HE (accessed February 14, 2012). |
| CBE/CSE | HE [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/HE. |
| Bluebook | HE, http://www.acronymgeek.com/HE (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HE, http://www.acronymgeek.com/HE (optional description here) (as of Feb. 14, 2012, 06:15). |
| AMA | HE. Acronym Geek. February 14, 2012, 06:15. Available at: http://www.acronymgeek.com/HE. Accessed February 14, 2012, 06:15. |