| APA | H4U. (2012, February 11). In Acronym Geek. Retrieved 23:18, February 11, 2012, from http://www.acronymgeek.com/H4U |
| MLA | "H4U." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/H4U>. |
| MHRA | 'H4U', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/H4U> [accessed 11 February 2012] |
| Chicago | "H4U", http://www.acronymgeek.com/H4U (accessed February 11, 2012). |
| CBE/CSE | H4U [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/H4U. |
| Bluebook | H4U, http://www.acronymgeek.com/H4U (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, H4U, http://www.acronymgeek.com/H4U (optional description here) (as of Feb. 11, 2012, 23:18). |
| AMA | H4U. Acronym Geek. February 11, 2012, 23:18. Available at: http://www.acronymgeek.com/H4U. Accessed February 11, 2012, 23:18. |