| APA | SIGH. (2012, February 16). In Acronym Geek. Retrieved 20:48, February 16, 2012, from http://www.acronymgeek.com/SIGH |
| MLA | "SIGH." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/SIGH>. |
| MHRA | 'SIGH', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/SIGH> [accessed 16 February 2012] |
| Chicago | "SIGH", http://www.acronymgeek.com/SIGH (accessed February 16, 2012). |
| CBE/CSE | SIGH [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/SIGH. |
| Bluebook | SIGH, http://www.acronymgeek.com/SIGH (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SIGH, http://www.acronymgeek.com/SIGH (optional description here) (as of Feb. 16, 2012, 20:48). |
| AMA | SIGH. Acronym Geek. February 16, 2012, 20:48. Available at: http://www.acronymgeek.com/SIGH. Accessed February 16, 2012, 20:48. |