| APA | HEUI. (2012, February 15). In Acronym Geek. Retrieved 08:22, February 15, 2012, from http://www.acronymgeek.com/HEUI |
| MLA | "HEUI." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HEUI>. |
| MHRA | 'HEUI', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HEUI> [accessed 15 February 2012] |
| Chicago | "HEUI", http://www.acronymgeek.com/HEUI (accessed February 15, 2012). |
| CBE/CSE | HEUI [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HEUI. |
| Bluebook | HEUI, http://www.acronymgeek.com/HEUI (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HEUI, http://www.acronymgeek.com/HEUI (optional description here) (as of Feb. 15, 2012, 08:22). |
| AMA | HEUI. Acronym Geek. February 15, 2012, 08:22. Available at: http://www.acronymgeek.com/HEUI. Accessed February 15, 2012, 08:22. |