| APA | 2SOPS. (2012, February 12). In Acronym Geek. Retrieved 16:19, February 12, 2012, from http://www.acronymgeek.com/2SOPS |
| MLA | "2SOPS." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/2SOPS>. |
| MHRA | '2SOPS', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/2SOPS> [accessed 12 February 2012] |
| Chicago | "2SOPS", http://www.acronymgeek.com/2SOPS (accessed February 12, 2012). |
| CBE/CSE | 2SOPS [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/2SOPS. |
| Bluebook | 2SOPS, http://www.acronymgeek.com/2SOPS (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, 2SOPS, http://www.acronymgeek.com/2SOPS (optional description here) (as of Feb. 12, 2012, 16:19). |
| AMA | 2SOPS. Acronym Geek. February 12, 2012, 16:19. Available at: http://www.acronymgeek.com/2SOPS. Accessed February 12, 2012, 16:19. |