| APA | H4PJ. (2012, February 15). In Acronym Geek. Retrieved 08:44, February 15, 2012, from http://www.acronymgeek.com/H4PJ |
| MLA | "H4PJ." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/H4PJ>. |
| MHRA | 'H4PJ', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/H4PJ> [accessed 15 February 2012] |
| Chicago | "H4PJ", http://www.acronymgeek.com/H4PJ (accessed February 15, 2012). |
| CBE/CSE | H4PJ [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/H4PJ. |
| Bluebook | H4PJ, http://www.acronymgeek.com/H4PJ (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, H4PJ, http://www.acronymgeek.com/H4PJ (optional description here) (as of Feb. 15, 2012, 08:44). |
| AMA | H4PJ. Acronym Geek. February 15, 2012, 08:44. Available at: http://www.acronymgeek.com/H4PJ. Accessed February 15, 2012, 08:44. |