| APA | 1ST. (2012, February 9). In Acronym Geek. Retrieved 14:19, February 9, 2012, from http://www.acronymgeek.com/1ST |
| MLA | "1ST." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/1ST>. |
| MHRA | '1ST', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/1ST> [accessed 9 February 2012] |
| Chicago | "1ST", http://www.acronymgeek.com/1ST (accessed February 9, 2012). |
| CBE/CSE | 1ST [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/1ST. |
| Bluebook | 1ST, http://www.acronymgeek.com/1ST (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, 1ST, http://www.acronymgeek.com/1ST (optional description here) (as of Feb. 9, 2012, 14:19). |
| AMA | 1ST. Acronym Geek. February 9, 2012, 14:19. Available at: http://www.acronymgeek.com/1ST. Accessed February 9, 2012, 14:19. |