| APA | H4N. (2012, February 13). In Acronym Geek. Retrieved 21:17, February 13, 2012, from http://www.acronymgeek.com/H4N |
| MLA | "H4N." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/H4N>. |
| MHRA | 'H4N', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/H4N> [accessed 13 February 2012] |
| Chicago | "H4N", http://www.acronymgeek.com/H4N (accessed February 13, 2012). |
| CBE/CSE | H4N [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/H4N. |
| Bluebook | H4N, http://www.acronymgeek.com/H4N (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, H4N, http://www.acronymgeek.com/H4N (optional description here) (as of Feb. 13, 2012, 21:17). |
| AMA | H4N. Acronym Geek. February 13, 2012, 21:17. Available at: http://www.acronymgeek.com/H4N. Accessed February 13, 2012, 21:17. |