| APA | 2H. (2012, February 11). In Acronym Geek. Retrieved 21:48, February 11, 2012, from http://www.acronymgeek.com/2H |
| MLA | "2H." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/2H>. |
| MHRA | '2H', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/2H> [accessed 11 February 2012] |
| Chicago | "2H", http://www.acronymgeek.com/2H (accessed February 11, 2012). |
| CBE/CSE | 2H [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/2H. |
| Bluebook | 2H, http://www.acronymgeek.com/2H (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, 2H, http://www.acronymgeek.com/2H (optional description here) (as of Feb. 11, 2012, 21:48). |
| AMA | 2H. Acronym Geek. February 11, 2012, 21:48. Available at: http://www.acronymgeek.com/2H. Accessed February 11, 2012, 21:48. |