| APA | 2ND. (2012, February 10). In Acronym Geek. Retrieved 10:46, February 10, 2012, from http://www.acronymgeek.com/2ND |
| MLA | "2ND." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/2ND>. |
| MHRA | '2ND', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/2ND> [accessed 10 February 2012] |
| Chicago | "2ND", http://www.acronymgeek.com/2ND (accessed February 10, 2012). |
| CBE/CSE | 2ND [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/2ND. |
| Bluebook | 2ND, http://www.acronymgeek.com/2ND (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, 2ND, http://www.acronymgeek.com/2ND (optional description here) (as of Feb. 10, 2012, 10:46). |
| AMA | 2ND. Acronym Geek. February 10, 2012, 10:46. Available at: http://www.acronymgeek.com/2ND. Accessed February 10, 2012, 10:46. |