| APA | 2HP. (2012, February 11). In Acronym Geek. Retrieved 22:36, February 11, 2012, from http://www.acronymgeek.com/2HP |
| MLA | "2HP." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/2HP>. |
| MHRA | '2HP', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/2HP> [accessed 11 February 2012] |
| Chicago | "2HP", http://www.acronymgeek.com/2HP (accessed February 11, 2012). |
| CBE/CSE | 2HP [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/2HP. |
| Bluebook | 2HP, http://www.acronymgeek.com/2HP (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, 2HP, http://www.acronymgeek.com/2HP (optional description here) (as of Feb. 11, 2012, 22:36). |
| AMA | 2HP. Acronym Geek. February 11, 2012, 22:36. Available at: http://www.acronymgeek.com/2HP. Accessed February 11, 2012, 22:36. |