| APA | HFE. (2012, February 9). In Acronym Geek. Retrieved 10:15, February 9, 2012, from http://www.acronymgeek.com/HFE |
| MLA | "HFE." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/HFE>. |
| MHRA | 'HFE', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/HFE> [accessed 9 February 2012] |
| Chicago | "HFE", http://www.acronymgeek.com/HFE (accessed February 9, 2012). |
| CBE/CSE | HFE [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/HFE. |
| Bluebook | HFE, http://www.acronymgeek.com/HFE (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HFE, http://www.acronymgeek.com/HFE (optional description here) (as of Feb. 9, 2012, 10:15). |
| AMA | HFE. Acronym Geek. February 9, 2012, 10:15. Available at: http://www.acronymgeek.com/HFE. Accessed February 9, 2012, 10:15. |