| APA | 2ST. (2012, February 14). In Acronym Geek. Retrieved 06:30, February 14, 2012, from http://www.acronymgeek.com/2ST |
| MLA | "2ST." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/2ST>. |
| MHRA | '2ST', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/2ST> [accessed 14 February 2012] |
| Chicago | "2ST", http://www.acronymgeek.com/2ST (accessed February 14, 2012). |
| CBE/CSE | 2ST [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/2ST. |
| Bluebook | 2ST, http://www.acronymgeek.com/2ST (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, 2ST, http://www.acronymgeek.com/2ST (optional description here) (as of Feb. 14, 2012, 06:30). |
| AMA | 2ST. Acronym Geek. February 14, 2012, 06:30. Available at: http://www.acronymgeek.com/2ST. Accessed February 14, 2012, 06:30. |